Taking over a town...literally (Red Dead Redemption)

I realized something, people might know this already, but i just wanted to get this out there....you can take over a town, for example i took over blackwater and now everyday i just walk over to the bank and take money out of the safe...how do i do this? Put on a bandana and take on the police force, believe it or not its not that hard, but i have some tips to make sure you can have great sucess in this. 1. take cover in a building; by doing this it allows  alot of cover for yourself 2. If you are hiding in a building, scope it out; when looking in a building make sure there is no back exit and that there is only a entrance so the only way the cops can get in is facing you 3. Have a shotgun or a pistol for close range (obviously); watch the mini map, if you have a rifle out and you see a red star coming close pull out the sawed off shotgun,high powered pistol, or double barrel. and those are my tips, best of luck to you.