Jimmy Kimmel made an emotional plea for lawmakers to take action on gun control during a powerful moment on his show on Monday night. The Las Vegas shooting [1] marked the deadliest mass shooting in modern American history, and Kimmel, who grew up in Las Vegas, shared his grief over the tragedy. "I hate talking about stuff like this. I just want to laugh about things every night, but that seems to be becoming increasingly difficult lately," he said. "It feels like someone has opened a window into hell." Watch the poignant moment above.