The Beastie Boys made Christ-rejecting music. Let's get right to the point. They hate the Lord Jesus, and if you claim to love Him yet admire the Beastie Boys, you clearly have a major conflict going on. There it is. Simple.
The song "Shambala" off the Ill Communication album. The chants at the start. A nod to their Eastern mystic worship.
"Bodhisattva Vow", the very next song.