The suspected shooter in the assassination of conservative commentator Charlie Kirk has been arrested, Utah Gov. Spencer Cox announced on Friday. He is a 22-year-old Utah resident named Tyler Robinson.

And a Pentagon spokesman said the Department of War has “zero tolerance” for any civilian or military personnel who celebrate or mock Charlie Kirk’s assassination.

Political scholars and ordinary people say the slaying of the 31-year-old political commentator is a possible watershed moment for the nation.