The call to commemorate those slain in the 2019 crackdown is expected to give new momentum to the protests that have roiled Iran for two months since Amini died on Sept. 16 after her arrest for allegedly flouting the Islamic republic's strict dress code for women.

Young activists have appealed for people to "conquer" the streets in Ahvaz, Isfahan, Mashhad and Tabriz, among other cities including Tehran.

"We will start from high schools, universities and markets and continue with neighborhood-centered gatherings to move to main squares of cities," they said in a call posted online.

Shops were shuttered in Tehran's famed Grand Bazaar, as well as in the cities of Kerman, Mahabad, Rasht, Shiraz and Yazd, according to videos published by the 1500tasvir social media channel.

"Death to the dictator," commuters were heard chanting in a Tehran metro station, using a slogan directed at Iran's supreme leader Ayatollah Ali Khamenei, in another online video. 

Striking steel workers were seen gathering in a car park in the historic city of Isfahan, in other footage shared by 1500tasvir. AFP was unable to immediately verify the videos.

Work stoppages were being observed in 16 cities in Amini's home province of Kurdistan, in western Iran, said the Oslo-based Hengaw human rights group.

They included Baneh, Divandarreh, Kamiyaran, Marivan and the flashpoint city of Sanandaj.

Bloody November

The call for protest actions on Tuesday is to mark the third anniversary of the start of "Bloody Aban"—or Bloody November—when a surprise fuel price hike sparked bloody street violence.

The days of unrest in Iran from Nov. 15, 2019 saw police stations attacked, shops looted and banks and petrol stations torched as authorities imposed a week-long internet blackout.

Amnesty International said at least 304 people were killed in the unrest that quickly spread to more than 100 urban centers across the Islamic republic.

A tribunal convened in London this year by various human rights groups said expert evidence suggested the actual number killed was likely far more, and possibly even as high as 1,515.

The anonymous youth groups behind the latest calls for protests have been mobilizing since the death of Amini on Sept. 16.

Oslo-based group Iran Human Rights said on Saturday that security forces had killed at least 326 people so far in the ongoing crackdown on the Amini protests.

The unrest was fanned by fury over the dress rules for women, but has grown into a broad movement against the theocracy that has ruled Iran since the 1979 Islamic revolution.

They have shown no sign of abating despite the Iranian authorities' use of lethal force to confront what rights groups say have been largely peaceful protests and a campaign of mass arrests that has snared activists, journalists and lawyers.

'Eyes of the world on Iran'

Among them is prominent freedom of speech campaigner Hossein Ronaghi who, according to Iran's judiciary, had been taken back to prison after being hospitalized.

Fears had been raised over the health of the 37-year-old Ronaghi, who launched a hunger strike after his incarceration in Tehran's notorious Evin prison on Sept. 24.

The European Union and United Kingdom on Monday slapped sanctions on more than 30 senior Iranian officials and organizations over the crackdown.

The EU sanctions targeted Interior Minister Ahmad Vahidi and the head of Iran's ground forces Kiyumars Heidari among those it said were responsible for the repression of demonstrations. 

Four members of the squad who detained Amini were also put on the blacklist. 

Among the organizations hit was state broadcaster Press TV, which was accused of airing "forced confessions of detainees". 

The United States strongly praised the European actions and declared: "The eyes of the world are on Iran."

The US government also condemned Iran's cross-border drone and missile strikes on Monday against Iraq-based Kurdish opposition groups that the Islamic republic accuses of stoking what it calls the "riots" at home.

Iran, which has accused the US and its allies of fomenting the unrest, threatened to retaliate.

"With their dependence on sanctions the Europeans lose all rationality and seriousness," foreign ministry spokesperson Nasser Kanani said.

"Iran will respond effectively and forcefully to Europe's unconstructive actions," he added.