How to deal with collisions caused by economic disputes?

1. This case is no less than an economic dispute, and the owner's son should be suspected of intentional injury;

2. Suggest your friend to do injury identification. If it constitutes a minor injury or more, the owner's son needs to bear criminal responsibility, and you can file a criminal private prosecution.

3. If the public security organ does not file a case, it is best to obtain the police record of the public security organ, which can be used as evidence;