HAMPTON, N.H. —GOP presidential candidate Donald Trump called Boston Mayor Marty Walsh a clown after he was called out to accept the ALS Ice Bucket Challenge Friday. Related "He's a clown, Marty Walsh," Trump said at a rally in New Hampshire Friday night. "This guy Marty Walsh. He spends all this time and effort and money on an Olympic bid, and then he goes out and he's talking about ice bucket challenges. Get a real mayor." Trump did take part in the Ice Bucket Challenge in 2014, though. He also took a jab at Gov. Charlie Baker. "Gov. Baker should...