You don't get through to them. So stop trying and just love them. They will find out soon enough. Remember: a person's value is much greater than their political beliefs. They are valuable as humans. Remember that. Treat them kindly and fairly. Let things take care of themselves. Do not burn bridges so that when they do start to awaken, you will still have a platform to enlighten them as they come to you on their own terms. Being patient means being patient for a long time. ;)