Police briefly detained more than 50 people after they tried to storm the barricades outside the Democratic National Convention on Monday in a show of anger over Bernie Sanders' treatment by party leaders, even as he urged his supporters to fall in line behind Hillary Clinton. Several hundred Sanders supporters and other demonstrators converged in the sweltering heat on Broad Street and made their way 4 miles to the convention site as the gathering was being gaveled to order, chanting "Nominate Sanders or lose in November!" and "Hey, hey, ho, ho, the DNC has got to go!" They carried signs reading, "Never Hillary," "Just Go to Jail Hillary" and "You Lost Me at Hillary."