CHICAGO — A south suburban man was sentenced to just over three years in federal prison Tuesday for leaving a message for a U.S. representative threatening to shoot up “terrorist” Democrats at Joe Biden’s inauguration in Washington early last year. “We will surround the (expletive) White House and we will kill any (expletive) Democrat that steps on the (expletive) lawn,” Louis Capriotti could be heard saying on the Dec. 29, 2020, call, in a distinctly south suburban Chicago accent. “If they think that Joe Biden is going to put his hand on the Bible and walk into that (expletive) White House on…