I Wonder What The Story Was Behind That?

My wife and I were coming home in a Lyft the other night when we saw someone on a bicycle peddling to go the other way as if their life depended on it. It might have, because a brief moment later we saw a motorcycle cop (full helmet and gear, no motorcycle) chasing after them. A brief moment after that, a motorcycle cop on a motorcycle pursued the pair of them. Our Lyft driver said he’d just seen the person on the bicycle deliberately ride straight into the motorcycle of the first motorcycle cop, who then jumped off and gave chase.

I just wonder, what was the story behind that?