More than 100 protesters have been killed by Iranian security forces since people took to the streets to protest fuel price hikes. That’s according to the human rights group Amnesty International who warned that some reports suggest it could be as many as 200 dead in 21 cities across Iran. Protests like this one have sprung up across the country after a hike in the cost of gasoline. Iran’s Supreme Leader Ayatollah Ali Khamenei has blamed the turmoil on Iran’s foreign enemies, including the U.S. And denounced protesters as “thugs”. The UN on Tuesday voiced concern at Iranian security forces use of live ammunition against demonstrators. And urged authorities to rein in its use of force.