Between the Iranian population and the US administration, opposition has only gotten louder.
The action comes after Secretary of State Mike Pompeo warned that the US would impose travel bans on prominent Iranian leaders as part of sanctions.
The U.S. State Department has said previously it had received videos of the Revolutionary Guards opening fire without warning on protesters in Mahshahr county in southwest Iran.
He said that there is no point to try and negotiate with the Islamic Republic.
In light of recent protests in Iran and US administration's "maximum pressure" campaign, the Iranian regime now has "very few options and all of them are bad."
The shooting down of Ukraine International Airlines flight 752, killing all 176 people aboard, has led to one of the biggest public challenges to the Islamic Republic's clerical rulers since 1979.
Security forces continued to face off with demonstrators, as some reports claimed that protests were violently suppressed.
The Iranian regime had only recently quelled protests, which have flared up again following the revelation that it was behind the downing of a Ukrainian passenger jet, killing everyone on board.
US President Donald Trump urged Iranian leaders not to kill protesters in a tweet on Sunday, referencing protests in November when over 1,000 protesters were killed and thousands more were injured and arrested.
A few people who did walk over the flags were booed by protesters in the area with chants of 'Shame on you.' Some reports said that the protesters chanted 'Our enemy is in Iran, not America.'