Protesters set an Israeli flag on fire and chanted "long live the intifada" outside of the Democratic convention site on Tuesday night.

A woman wearing a black bandanna on her face lit the flag on fire as protests continued outside of the secure zone around the Wells Fargo Center in Philadelphia. Someone stood nearby waving a Palestinian flag.

Protesters also set pro-Bernie Sanders fliers on fire that were hanging on steel fencing around the site.

The groups marched up Broad Street outside of the arena where Hillary Clinton on Tuesday became the first woman to win the presidential nomination of major U.S. political party.

The protests continued after Sanders delegates and supporters held an hour-long sit-in inside a media tent in the parking lot outside of the arena where the convention is being held.

The National Jewish Democratic Council condemned the flag-burning on Twitter, calling it "Disgusting and totally reprehensible. These protestors aren't only wrong, but are fundamentally anti-progressive."