Republican presidential candidate Donald Trump said he is a “uniter,” but the growing violence at his campaign events has led many to question whether Trump can unite his own party. His supporters and opponents have fought in the last few days. Some people have been arrested. At a Trump rally in North Carolina, one of his supporters punched a protestor who was being removed from the event. Another event planned for last Friday in Chicago was cancelled after a large group of protestors entered the building. On Saturday, a protestor was stopped before he could reach Trump on the stage in Ohio. At rallies in Missouri, protestors repeatedly interrupted Trump’s speech and were removed by security. Republican and Democratic opponents said Trump is responsible for the clashes at these events. Senator Ted Cruz of Texas is Trump's leading Republican opponent. Cruz said that Trump’s campaign “encourages violence. And Ohio Governor John Kasich, another Republican candidate, added, “Donald Trump has created a toxic environment.”