The death toll from nationwide protests in Iran spiked Tuesday to at least 2,000 people killed, activists said, as Iranians made phone calls abroad for the first time in days after authorities severed communications during a crackdown.

Iranian student Rubina Aminian was shot in the head at close range, joining thousands allegedly killed by government forces, according to Iran Human Rights, a Norway-based group.

A source inside Iran who was able to call out told CBS News on Tuesday that activist groups working to compile a full death toll from the protests, based on reports from medical officials across the country, believed the toll was at least 12,000, and possibly as high as 20,000.

Protests against immigration enforcement were taking place across the U.S. after federal officers shot three people in Minneapolis and Portland.

Iran's government imposes five-day internet blackout as nationwide protests intensify, with at least 646 people killed and over 10,000 arrested during the crackdown.

Anti-government protests have erupted across all 31 of Iran’s provinces in a wave of unrest that marks the biggest challenge to the regime in years.

Protests in Iran have continued for nearly two weeks, with the government acknowledging the unrest despite a harsh crackdown

Iran faces unprecedented protests as citizens unite around overthrowing the Islamic Republic, marking the most serious threat to the regime since 1979.

New clashes over ICE operations in Minneapolis; Backlash after DOJ launches criminal investigation into fed chair; Trump responds to anti-government protests in Iran getting more violent; and more on tonight’s broadcast.