Scuffles break out between demonstrators and Trump supporters, while the front and back windows of a police car are smashed.
At least 20 people have been arrested after scuffles broke out between protesters and supporters of Donald Trump in California.
The violence erupted in the city of Costa Mesa, as the US presidential hopeful held a rally there on Thursday evening attended by thousands of backers.
The protests were mostly peaceful as the Republican front runner gave his speech but later they became more rowdy.
The front and back windows of a police car were smashed and its roof was dented. Read more...