The number of Democratic members of Congress saying they will boycott Donald Trump's inauguration on Friday has increased to 26. Many have cited as a reason the president-elect's recent attack on civil rights icon and fellow congressman John Lewis.<br/><br/> Mr Lewis was a prominent member of America's civil rights movement and is a hero to many Americans. He was among those beaten by police during the infamous Selma-Montgomery voting rights march of 1965. He joined the House of Representatives in 1987 and has served Georgia's fifth congressional district ever since. Mr Trump also suggested his district was crime-infested.<br/><br/>The insult, made just days ahead of Martin Luther King Day, was the final straw for a number of Democrats who will break with tradition by missing the inauguration ceremony on Friday.