Setup To Be Jumped At A Bar

So me, my girlfriend, her sister, and our male friend went to a bar in central Wisconsin for some drinks. When we walked in somebody told our friend to leave because they were upset about something our friends brother did to this guy. Our friend said we're just here to have some drinks and have a good time. Nothing else was said all night but we were getting weird looks. The bartender was talking to the group of people that were staring at us and whispering with them and it was obvious it was about us. A little later the bartender was messing with the door and then told us the front door isn't working so if we have to go outside to smoke use the back door where there was a guy waiting. We decided not to go out at all and then midnight came around and the bartender said we had to leave after our drinks because he was closing. He didnt tell anyone else they had to leave just us. So when we did leave we tried going out the front door and it wouldn't open and the bartender said we had to go out the back so we did and there was a guy waiting for us and started yelling how he was gonna knock us out and then about 6 more people came out yelling at us so we ran across the street to another bar and that bartender yelled at them to get out and locked the door. Nobody was touched because we escaped pretty fast but can anything be done legally to the establishment for setting us up like that?

Location: Central Wisconsin

This just happened a few days ago.