Several people have died in the past three weeks amid the often violent political clashes.
Opposition leaders are calling for a nationwide push on Monday to block streets and paralyse Haiti's economy as they press for President Jovenel Moise to give up power, and tens of thousands of their dedicated young supporters are expected to heed the call.
People stood in lines all day on Sunday under a brutal sun to get water, gasoline and other basic supplies before the next round of protests that many worried would turn more violent than a demonstration on Friday during which several homes and businesses were burned as police fired tear gas at protesters.
Several people have died in the past three weeks amid the political clashes.
"I have a feeling that the country is going to change," said Yves Bon Anée, a mason standing next to eight empty plastic gallons that he would fill with gasoline at $2 a gallon for friends, family and himself. He planned to resell his portion to make some money because he hasn't been able to find work in weeks amid Haiti's crisis.
"My kids are suffering," he said of his three young boys.
Opposition leaders and supporters say they are angry about public corruption, spiraling inflation and a dwindling supply of gasoline that has forced many gas stations in the capital to close as suppliers demand the cash-strapped government pay them more than $100 million owed.
Protesters also are demanding a more in-depth investigation into allegations that top officials in the previous government misused billions of dollars in public funds that were proceeds from a Venezuela subsidized oil plan meant for urgent social programs.
Moise, who took office in 2017 following an election redo, has said he will not step down despite the unrest and instead called for calm, unity and dialogue during an address televised at 2 am local time Wednesday. It was a rare appearance for the president since the new wave of protests began about three weeks ago.
Laurent Dubois, a Haiti expert and professor at Duke University, said he believes the country will face an increasing impasse unless the parties find a way to reach some kind of resolution.
"There's a lot of fear, a lot of anxiety ... that things are going in a direction in Haiti that we haven't seen in a while," he said. "It seems like we're going into some kind of new phase in Haitian history, but what it holds will be difficult to predict."
Opposition leaders demanding Moise's resignation say they envision a transitional government after the chief justice of Haiti's Supreme Court takes over as dictated by law if a president resigns.
André Michel, an attorney and professor of human rights, said Haiti's current political system has generated misery, underdevelopment and corruption that have led to poverty, noting that the country's middle class has shrunk.
Michel said Haiti needs to rebuild a new society and state as he called on the international community to back the goal of opposition leaders to oust Moise.
"The will of the people is clear," Michel said. "If he insists on remaining as president, he will lead the country into chaos."
At a news conference Sunday, opposition leaders urged the dozens of supporters gathered around them to start blocking streets and to help them look for Moise, whom they contend has gone into hiding.
Among those leading the call to find Moise was opposition Sen. Youri Latortue, who has denied corruption allegations that US officials made against him more than a decade ago and once led a party allied with Moise's Tet Kale faction.
"We're going to search for him everywhere," Latortue said.