circulate

Videos circulating online show vast swathes of destruction in the city's main neighbourhoods, including Sheikh Radwan in the north, and Sabra and Zeitoun to the south and east, where entire apartment blocks have been levelled.

Local campaign group Stop Pollution called for the protest after videos circulated on social media showing local schoolchildren struggling to breathe in a classroom.

Other videos show circulating show similar destruction in the Sabra and Zeitoun neighbourhoods to the south and east, where entire apartment blocks have been levelled.

Ryan Fournier, a conservative activist, had promoted the post and took it down late Sunday, several days after the rumor began circulating, she said.

For months, word has circulated in the U.S.