Why was I chased down on the road?

I was coming home from dance practice after 12am and there were two cars ahead of me. The one in front of me (white car) started turning into a left turn lane without his indicator on and then abruptly swerved back in front of me. I could have hit him so naturally I honked. The car in the other lane (black car) switched lanes and drove in front of the white car. Now seeing the right lane clear, and knowing that I would have to eventually make a right turn, I switched into the right lane. Then, the black and white car swerved in front of me as I was making a right turn. The black car then stopped in the right lane and the white car pulled up beside it. As i drove around them the white car and black car drove up close behind me and chased me home. I drove right into my drive way as opposed to reversing like i normally do to avoid being hit by the cars. I parked my car but remained inside and the two cars were sitting in front of my house. One of the guys in the car pulled down his window and said something but I couldn't hear. As I was reaching for my phone to call for help the two cars sped off. I'm pretty sure they are not drunk. Their actions were deliberate. Maybe it was a result of road rage but they were swerving and braking in front of me before I even honked my horn. I thought maybe they were racing but racing requires speed and they were clearly focused on blocking my way. What were they trying to accomplish?