What kind studying helped Huey Newton prepare a plan to protect against police brutality?

The correct answer to this open question is the following.

What helped Huey Newton prepare a plan to protect against police brutality was the development of his Ten-Point Program with Bobby Seale, co-founder of the Black Panther Party for Self-Defense. These two young people took a military-style formation for their group and started to act violently in some demonstrations. One example was the entering of the California legislature in 1967, using guns. The Black Panthers wanted to stop police brutality confronting cops and many times clashed with police forces in violent attacks.

map scale refers to the relationship (or ratio) between distance on a map and the corresponding distance on the ground. for example, on a 1: 100000 scale map, 1cm on the map equals 1km on the ground.