CLEAN : Police brutality video at Hong Kong protest sparks outrage

The transcript describes a police operation during a protest, detailing the actions and warnings given by the police, the responses of the protesters, and the enforcement measures taken to ensure public safety. It also outlines the legal procedures to be followed if any criminality is revealed and the continuation of operations to remove obstacles and restore traffic.

What will happen if any criminality is revealed during the police operation?

What was the reason given for the police operation to remove obstacles?