“When you give a dinner or a banquet, do not invite your friends or your brothers or your relatives or wealthy neighbors, lest they also invite you in return, and repayment come to you. But whenever you give a banquet, invite the poor, the crippled, the lame, the blind, and you will be blessed, because they are not able to repay you. For it will be paid back to you at the resurrection of the righteous.”

Luke 14:12-14, instruction from Jesus himself.

So have your cookout and invite all the homeless, and when the cops show up show them this passage and tell them it’s your solemn duty according to the Bible!