Kerley approached them with an “aggressive demeanour” over concern about his car, according to a police report.
The report said Kerley “continued to resist officers and used evasive movements to avoid being arrested” before being wrestled to the ground by four officers.
I didn’t cut anything out there. It jumps right from him approaching them to them trying to arrest him. The only reason provided is that his demeanor was aggressive.
Watergate is tame by today’s standards.