You know, Lester isn't as soft as he lets on, at least in these two GTA Online videos he's not.
The first one below is from YouTube user 10Phoenix01 Gamer, showing Lester kick a guy's ass. It's apparently punishment for running over the player - at least that's the way it appears.
A second video from YouTube user Thoraxe0987 shows Lester riding a motorcycle, but he doesn't seem to very good at stopping.
According to what Thoraxe0987 told Kotaku, normally Lester steals NPC cars and "drives like a mad man," but in this case he stole his motorcycle.
"If you want to make him do this, load up the scouting mission for the Fleeca Heist," said Thoraxe0987. "Once you walk outside, run up to Lester and smack him with a baseball bat.
"It may take a few tries, but once he gets up, he'll walk or run like normal NPC and try to steal vehicles."
Finally, for fun, there's a video from vRickyz below, showing he and other player "arresting" players who were killing low ranked players in the lobby with an Insurgent.
I have to say, using N.W.A.'s "Fuck tha Police" in the video was a nice touch.
The police uniform and motorcycle were created using a glitch in the game, in case you were wondering.