Michael R. McGregor, 32, pleaded guilty on April 28 to committing fourth-degree assault on Dec. 28. An officer responded to Union Street after a man reported McGregor had assaulted him. The man said McGregor knocked on his door, started yelling at him, pushed him down, and repeatedly punched him before leaving the apartment. McGregor later came to the station to make a statement, and said he “whopped him a good one” and “smacked him a…