Iran said Thursday it had executed a person arrested over the monthslong protests gripping the country, the first known death penalty carried out related to the unrest.
At least 475 people have been killed and 18,000 others arrested, according to the watchdog Human Rights Activists in Iran, which is based just outside Washington.
It "must be met with STRONG reactions otherwise we will be facing daily executions of protesters," Mahmood Amiry-Moghaddam, the director of the Oslo-based activist group Iran Human Rights, said in a tweet.
The news agency alleged that Shekari was offered money to wield the machete and take part in the protests.
Iran executed 314 people last year, the most in the world after China, according to data compiled by Amnesty.