For the second time less than a week, hundreds of human right activists and Saudi regime opponents gathered in front of the Saudi embassy in London to condemn savages mass execution of Shiites by Saudi rulers.

Iran Press/ Middle East: Demonstrators holding signs and placards chanted outside the residence in Mayfair on Friday, with many calling on the UK government and European country to break silence on Riyadh's crimes against humanity, Iran Press reported.

Saudi Arabia on Tuesday has executed 37 people in a single day for alleged 'terrorism crimes' but in fact, it was a crackdown led by Crown Prince Mohammed bin Salman against Shiites opponents jailed for the pro-democracy campaign, human rights activity and peaceful protest, Iran Press reported.

The executions took place in the capital Riyadh, the Muslim holy cities of Mecca and Medina and especially the central province of Qassim, oil-rich and Shia-populated Eastern Province and the kingdom’s southern province of Asir. The convicts were all Saudi nationals and one of the condemned was crucified after the execution.

A Shia academic, a disabled protester and a number of detained minors were among 37 people that Saudi Arabia executed in its recent mass execution on "terrorism" charges, a new report has revealed.

Human rights groups state that at least 33 out of the 37 individuals executed on Tuesday were from Saudi Arabia's persecuted Shia minority, the Middle East Eye reported Thursday.

Documents show that many of the executed individuals had "repeatedly" told the Saudi court that, in a bid to save their lives, they had been forced to accept confessions their torturers had written for them.

In one case, one of the defendants affirmed loyalty to the Saudi kingdom in hopes of getting leniency from the court, only to be executed later on.

The official Saudi Press Agency (SPA) claimed that "the death penalty was implemented...on a number of culprits for adopting extremist terrorist ideologies and forming terrorist cells to corrupt and disrupt security as well as spread chaos and provoke sectarian strife."

Reports detailing the lives of a number of the protesters, however, reveal a strikingly different account behind the recent mass executions.

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