Republican presidential candidate Donald Trump speaks during the final day of the Republican National Convention in Cleveland, Ohio, July 21, 2016.
Republican presidential candidate Donald Trump speaks during the final day of the Republican National Convention in Cleveland, Ohio, July 21, 2016.

Protesters again clashed on Thursday, the day Republican presidential nominee Donald Trump is to give his acceptance speech at the Republican National Convention in Cleveland.

Donald Trump supporters face off with anti-Trump p
Donald Trump supporters face off with anti-Trump protesters at the Republican National Convention in Cleveland, July 21, 2016.