KABUL, Afghanistan (AP) -- Authorities locked down Afghanistan's capital Monday as tens of thousands of ethnic Hazaras marched through the streets calling on the government to reroute a power line through their poverty-stricken province in a massive protest that reflected public dismay with the government of President Ashraf Ghani.
Amid concerns the protest could turn violent, roads leading into central Kabul's commercial district were blocked to all vehicle and foot traffic by police, who used stacked shipping containers to prevent the marchers reaching the presidential palace.
Most of the city's shops were shuttered and armed police units took up positions around the city. Authorities told protest organizers that the march would be confined to a specific route that would not take them near the presidential palace. A November demonstration that followed the beheading of a number of Hazaras by insurgents turned violent.
The backing of other ethnic groups for the protest highlighted the political crisis facing Afghanistan, as Ghani becomes increasingly isolated amid a stalled economy, rising unemployment, and an escalating insurgency now in its 15th year.
Since taking office in 2014, Ghani has made little progress in keeping promises to bring peace and prosperity to the country, instead presiding over an administration that seems to lurch from one crisis to another.
The U.S. Embassy in Kabul closed its consular section and warned Americans to limit their movement within Kabul. "Even demonstrations intended to be peaceful can turn confrontational and escalate into violence," it said in an emergency message.
Other embassies, United Nations compounds and non-government organizations were also locked down.
Daud Naji, a protest leader, said the Hazaras were demanding access to a planned multimillion-dollar regional electricity line. The so-called TUTAP line is backed by the Asian Development Bank with the involvement of Turkmenistan, Uzbekistan, Tajikistan, Afghanistan and Pakistan. The original plan routed the line through Bamiyan province, in the central highlands, where most of the country's Hazaras live. But that route was changed in 2013 by the previous Afghan government.
Leaders of Monday's demonstration have called the routing of the line away from their territory evidence of enduring bias against the Hazara minority. Hazaras account for up to 15 percent of Afghanistan's estimated 30 million-strong population; they are considered the poorest of the country's ethnic groups, and often complain of discrimination.
Bamiyan is poverty stricken, though it is largely peaceful and has potential as a tourist destination. Hazaras, most of whom are Shiite Muslims, have been persecuted in the past, notably by the extremist Sunni Taliban's 1996-2001 regime.
Afghanistan is desperately short of power, with less than 40 percent of the population connected to the national grid, according to the World Bank. Almost 75 percent of the country's power is imported.
Karim Khalili, a Hazara leader and former vice president, told supporters from the back of A truck that the "people will never keep quiet when facing injustice."
"Again I want call on Dr. Ashraf Ghani and (chief executive) Dr. Abdullah Abdullah to change the decision __ don't you think a change of mind regarding the electricity line would be better?" he shouted to the crowd that had stopped near the Kabul Zoo in the west of the city.
Calling on the protesters to disperse, Khalili told them: "Our movement will continue, we will follow this issue until we get a result."
As leaders of other ethnic groups backed the Hazaras' so-called Movement of Light, political commentator Haroun Mir said what started as an isolated grievance from an ethnic minority has gained momentum and grown into an umbrella issue for the many opponents of Ghani's unpopular government.
"This is a mobilization and I know many Tajiks are supporting Hazaras, not because absolutely they want this thing to go through Bamiyan but because they hate this government and this is an opportunity for them to further weaken it," he said.
Abdul Malik, 53, a Pashtun from southern Kandahar province, said he joined the protest "to show unity for their rights as in past 15 years very little has been done for Hazaras, and people need electricity in their homes."
Ghani's office released a statement saying he had worked tirelessly in recent weeks to resolve the issue through negotiations with community and protest leaders. "The important point of these dialogues was to find means and resources to provide electricity to Bamiyan," it said.
Intense negotiations between Ghani and lawmakers aimed at cancelling the protest broke down late Sunday. Hazara lawmakers had walked out of parliament on Saturday to pressure the government on the issue.
The statement said Ghani had appointed a 12-member team to investigate the viability of rerouting the line through Bamiyan and suspended work on the project until the commission reported its findings later this month.