(Ahlul Bayt News Agency) - Several moderate Sunni groups and civil society groups also joined the demonstration in the eastern city of Lahore and several other major cities across Pakistan.
Protestors chanted slogans blaming the government for failing to provide security to the Shias across the country as targeted killings have not stopped.
The organizations have warned the government of a protest campaign if the killers are not arrested and punished.
The protest comes as several local Shia leaders were killed in the latest bout of violence in southwestern city of Quetta and the southern port city of Karachi.
A senior leader of Jaffaria Alliance Pakistan (JAP) was assassinated in an attack by unknown gunmen in the country's largest city.
Agha Aftab Haider Jaffari was killed during the early hours of Tuesday near Saddar Parking Plaza in Karachi.
In a separate attack in Karachi, militants killed two other Shia Muslims.
The Shia Ulema Council organization and the JAP have condemned the acts of violence against Shia Muslims in Pakistan.
In addition, the Majlis-e-Wahdat-ul-Muslimeen religious party has announced three days of mourning.
In the southwestern city of Quetta, heavily armed gunmen opened fire at a taxi killing three people and injuring two others.
Meanwhile, several Pakistani lawmakers have strongly condemned the ongoing massacres of Shia Muslims in Quetta, Karachi and Gilgit-Baltistan.
The killing of Shias in Pakistan has sparked international outrage, with rights groups and regional countries expressing concern over the ongoing carnage. Still, those behind the violence are rarely caught or punished.
Pakistan's pro-Taliban militants have launched a violent campaign against Shia Muslims over the past years. According to local sources, militants affiliated to Taliban and al-Qaeda terrorist groups have killed hundreds of Shia Muslims in the region since the start of the campaign.
The country’s Shia leaders have called on the government to form a judicial commission to investigate the bloodshed.
The killing of Shias has caused an international outrage, with rights groups and regional countries expressing concern over the ongoing deadly violence.
Human Rights Watch issued a statement in September asking the Pakistani government to “urgently act” to protect the Shia Muslims in Pakistan.
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