The Killing Floor 2 End User License Agreement turns out to have some interesting language about how developer Tripwire Interactive plans on dealing with griefers in their shooter sequel (thanks Ars Technica). There is extensive discussion of the topic on the Steam forums, and here are the paragraphs that have spurred all the conversation:

We also will not tolerate anyone using the game, or any servers or forums provided for the game, to be continually or repeatedly abusive to other players. This includes, but is not limited to, "griefing", racist bigotry, sexism or any other forms of "cyber bullying". We will also not tolerate anyone hosting servers for the game where such behaviors are continually or repeatedly allowed to take place.

If we find you are a Cheater or Abusive, we will revoke your CD key and ban you from the KF2 servers and tell your mom! Your license will automatically terminate, without notice, and you will have no right to play KF2 or any KF2 Mods against other players or make any other use of KF2. End of story.