How to deal with a charging bull

Do not antagonize the bull (=don't make the bull angry), and do not move.
Bulls will generally leave humans alone unless they become angry.

Look around for a safe place—an escape route, cover, or high ground.
Running away is not likely to help unless you find an open door, a fence to jump, or another safe place— bulls can easily outrun humans. If you can reach a safe spot, make a run for it.

 
If a safe place is not available, remove your shirt, hat, or another article of clothing.
Use this to distract the bull. It does not matter what color the clothing is. Despite the colors bullfighters traditionally use, bulls do not naturally head for red— they react to and move toward movement, not color.  

If the bull charges, remain still and then throw your shirt or hat away from you. The bull should head toward the object you've thrown.