Young men wearing masks lurk in the darkened alcoves of the old market in Bahrain's capital. "To victory," they whisper as they hand out pamphlets calling for greater rebellion after two years of nonstop unrest in the Gulf kingdom.
In another part of the city, leaders of established Shiite opposition groups study their next moves. One option is to open talks with the Sunni monarchy as a possible soft landing from the Arab Spring's longest-running uprising against a sitting power.
The two faces of Bahrain's tumult have never been clearer as the struggles in the strategic island - home to the U.S. Navy's 5th Fleet- mark their second year next week.
The old guard Shiite political factions appear worn down by the ceaseless tensions and seem increasingly open to some kind of face-saving compromise with Bahrain's Sunni leadership. Such negotiations are endorsed by Washington and other Western allies of Bahrain's ruling dynasty.
On Monday, Bahrain's justice minister, Khaled bin Ali Al Khalifa, said preliminary political talks are scheduled to begin Feb. 10 - just days before the second anniversary of the crisis. The official Bahrain News Agency called it an important step toward "national consensus."
But the clashes and bloodshed also have elevated another voice from Bahrain's streets: A shadowy network of youth groups and hard-line Shiites - knitted together by social media - that have coalesced around an angry axis. Calls to bring down the monarchy are now staples in the near daily skirmishes with security forces.
"No to dialogue! No to surrender!" several hundred protesters chanted during a recent confrontation between demonstrators with firebombs and riot police responding with tear gas and stun grenades.
It might seem like a worrisome groundswell for Bahrain's Sunni rulers, who have managed to keep a close grip on power for decades under what critics call a two-tier system. The majority Shiites, about 70 percent of the population, claim they are relegated to the lower rungs with limited say in the country's affairs.
Bahrain's uprising seeks to tilt the scales toward the Shiites. But divides within the Shiite population - whether to battle harder or open talks - could end up giving Bahrain's rulers more breathing space. If the main Shiite factions can be brought into negotiations, the opposition left on the streets would continue as an annoyance to the monarchy but less of a potential threat to their power.
"The confrontational elements in Bahrain - those who have effectively rejected dialogue as pointless - are certainty taking more charge of the tone on the streets," said Toby Jones, an expert on Bahraini affairs at Rutgers University. "It invites a type of comparison to the 50s and 60s civil rights movement when activists had to be provocative enough to provoke police backlash and brutality and the cycle goes on."
It's not hard to lose track of little Bahrain on the greater Arab Spring stage.
Bahrain's two-year death toll of more than 55 was exceeded in a single day in Syria. There is no clear center of gravity in Bahrain's uprising like Egypt's Tahrir Square. Bahrain's protest hub of Pearl Square was cleared by police raids in the early weeks of the unrest and now is ringed round-the-clock by security forces, razor wire and concrete barricades.
But the tensions on the tiny island - whose native population of more than 550,000 is equivalent to a Cairo neighborhood - resonates in many important directions.
The survival of Bahrain's monarchy is a priority of the highest order for the fraternity of other Gulf Arab leaders, who have so far ridden out the Arab Spring and have united to stamp out potential threats. Among the crackdowns: Arrests in Kuwait and Qatar for alleged online dissent and charges against 94 suspected coup plotters in the United Arab Emirates with claimed links to Islamist groups such as the Muslim Brotherhood.
Problems in Bahrain also spill over into the Gulf Arab showdowns with Shiite power Iran.
Gulf Arab leaders never miss an opportunity to accuse Iran or its proxies, such as Lebanon's Hezbollah, as being off-site masterminds of Bahrain's unrest. Iranian officials and its state media often portray Bahrain's Shiite protesters as freedom fighters and distant kin. But no clear evidence has emerged to back up claims of direct aid.
Still, the Gulf claims ring powerfully in the West as part of wider fears over Iran's expanding influence.
And that is just part of delicate diplomatic balance for the U.S. in Bahrain.
Washington is unlikely to do anything to sour relations with Bahrain's Western-educated king, Hamad bin Isa Al Khalifa, or jeopardize its vital military interests such as the 5th Fleet, the Pentagon's main base to counter Iran's expanding military presence in the Gulf and protect oil shipping lanes through the Gulf of Hormuz.
Yet the U.S. is increasingly uneasy about hard-edged Bahrain measures such as stripping citizenship from 31 Shiite political activists and upholding life sentences for eight others.
"Unfortunately, 2012 was the year that Bahrain's ruling family showed it prioritizes repression over reform," said Joe Stork, deputy Middle East director at Human Rights Watch. "This year the government needs to act on its reform rhetoric by setting free all peaceful protesters, including the protest leaders still serving long prison terms for exercising their right to free speech and peaceful assembly."
There seems little to indicate Bahrain will ease up on the opposition. Authorities use phrases such as "saboteurs" and "terrorists" as violence has risen, including a series of five bomb blasts in November that killed two South Asian workers.
But Bahrain's leaders also have made noticeable reforms along the way, including giving the elected parliament more oversight powers and pledging deeper investigations into alleged abuses by security forces. Although tangible concessions, they are dismissed by many Shiites as mere window dressing that still leaves the monarchy in control of all key posts and decisions.
"The authorities can no longer go by the old notion of possession and absolute control of the land and people," Bahrain's most influential Shiite cleric, Sheik Isa Qassim, said in a December sermon. "`This old perception is no longer accepted today in any place on earth."
Hard-line Shiite opposition groups have pushed this view even further under the banner of the Feb. 14 movement - the date of the first major demonstration in 2011. Photocopied pamphlets distributed during protests set their goal in absolute terms: A fight to strip the monarchy of its powers and stewardship over Bahrain.
"These groups are not just going to fade away because of some kind of possible political dialogue. Too much has happened in two years," said Jones, the Rutgers professor. "They now feel it's not over until they say it's over."
The main Shiite parties initially welcomed the call for talks, but then wavered after suggestions that only lower-ranking Sunni officials would take part. Without top-level participants, there is little chance that key items would be on the agenda such as breaking the monarchy's control on all top government and security appointments.
"The talk of dialogue is still no more than a media show," said Jameel Khadhim, a senior official with Al Wefaq, the biggest Shiite political group, which has called for peaceful opposition gatherings until the second anniversary of the uprising.
In alleys and side streets in Shiite neighborhoods, meanwhile, other types of showdowns take place. Shiite youths set roadblocks of burning tires and gather Molotov cocktails and rocks for the inevitable arrival of riot police.
"The king's days are numbered," said 18-year-old Mohammad Jaffar. "We are not going to surrender."
Murphy reported from Dubai, United Arab Emirates.