Bernie Sanders loyalists warned that the Democratic Party could rupture over the nomination of Hillary Clinton after a volatile night that saw a large group of Sanders delegates and supporters exit the party's national convention to stage a sit-in at a nearby media tent. They rejected Sanders' call for unity even after the Vermont senator took the symbolic step of declaring Clinton the winner of the state-by-state delegate count inside the convention in Philadelphia.

Bernie Sanders loyalists warned that the Democratic Party could rupture over the nomination of Hillary Clinton after a volatile night that saw a large group of Sanders delegates and supporters exit the party's national convention to stage a sit-in at a nearby media tent. They rejected Sanders' call for unity even after the Vermont senator took the symbolic step of declaring Clinton the winner of the state-by-state delegate count inside the convention in Philadelphia.

Bernie Sanders loyalists protested inside and outside the Democratic National Convention site and clashed with police on Tuesday after Hillary Clinton won the party's presidential nomination. Despite Sanders' calls for them to support Clinton, thousands of activists have taken to the streets during the convention this week to voice support for the liberal Vermont U.S. senator and his progressive agenda.