In the United States, tens of thousands of people marched through midtown Manhattan and dozens of cities yesterday, demanding President Donald Trump release his tax returns. <br/><br/>The biggest tax marches took place in Washington, New York and Los Angeles, while in California clashes erupted between Trump supporters and opponents, where fourteen people were arrested. The protesters wanted to call attention to Trump's refusal to disclose his tax history, as his White House predecessors have done for more than 40 years.