Or how about other motives like fanatism or hatred in general or personal reasons beyond money?
There are many many more motivations for an antagonists than just money.
Or is it in general not allowed to portray any member of the police, the government or the army as an antagonist?
If that is the case then I will have to ask why? They are taking away great potential for movies which so far are not really good plotwise (even many Chinese think that way) and find not much acknowledgement abroad.