The same DM, in the previous session: “so you are ambushed by the very village you came to help, roll initiative!”

It can makes sens for some, Paladins for instance, to put order before good, the lawful evil.

But murder-hobos are gonna blast anyway.

imo if your players all just want to fight take them to a place full of hostile creatures or in a full on war at that point. There's definitely some creative interest for the DM in both of those I think.