Yes, there is a risk of you getting arrested. Probably even a high risk. It's not your job to get everyone to quick smoking pot. If your friends are dumb enough to do it and you're dumb enough to hang around in some vain hope that you can get them to quit, then that's on you.
When you get arrested, don't come here starting a thread whining about it asking how to get the charges dropped or reduced.
Of every one hundred men, ten should not even be here. Eighty are nothing but targets. Nine are real fighters, and we are lucky to have them, for they make the battle. Ah, but the One... One of them is a Warrior... He will bring the others back.
"Wrong door, buddy!"
Let no man's ghost say my training failed him.