What to do with money earned as a musician performing gigs at venues which serve alcohol?

I'm a socially conscious musician. I rhyme about things that occur in society in order to bring awareness. I don't swear in my music nor do I encourage anything that is un-islamic, in my lyrics. A lot of my music has positive messages for society. I've recently employed someone to manage my gigs and recordings. I sometimes have to perform at venues where they serve alcohol. These institutions pay me for a gig and some of that money is obviously acquired with the sale of alcohol. What can I do with that money? Is that money considered haram for me to spend? If so, what can I do with it? Can I give it to a beggar? I know that money earned out of interest can be used to build a toilet for a community. I don't know if I will get that amount of money to build such a structure so some realistic ideas would be greatly appreciated.