Last Saturday, I (28F) was taking my brother (28M) to work. It went south almost immediately, with him yelling at me because I told him he couldn't use the stereo because it's my car, and I wanted to choose the music.

Because he'd yelled at me, I told him I wasn't going to take him to get coffee, but directly to work. This made him furious and caused him to yell even more and he even started striking the dashboard with his fist.

When we were almost at his workplace, he grabbed the steering wheel and turned it hard to the right, causing us to almost hit a power line. I slammed the brakes and told him to get out of the car, and when he didn't, I grabbed him by the beard and he struck me repeatedly in the face, finally getting out once I let go.

I'm pretty sure I'm the asshole, but what do you think?