IPman4 is a demonstration of how movie producers introduce racial hatred to Hollywood. The movie started with a Chinese girl bullied in the school by White boys, the intent of the writer was to show that Americans are bullies to other races. The write and producer also used a lot of hate words in the USMC to demonstrate that Chinese and their cultures are not welcomed. The writer also used the school principal requesting IPman to contribute to the school board to show that the US schools are corrupt. Wan cautioned his daughter not to kneel to these people, that's the Americans. Then, the fight between the IPman and the Marine commander makes it look like the Chinese are overpowering the Americans.
Generally, the movie is slandering cultures and races while promoting hate.