Revert "Update README.md"

This reverts commit d542987779a4b7c13abad05eebe0da6d37e9541b.
Revert "update readme with note on census data"

This reverts commit 10bd0efcdf0a02348bf87dd63ca4ea947a39c427.
Revert "add data on asian police officers"

This reverts commit 22f4a49774e2178355178e5245c9f199e2a3691a.
Revert "add .Rhistory to gitignore"

This reverts commit 0d09536c28777d00fb2293f064ad78b45324a321.
Revert "update main and police-locals readme files"

This reverts commit 072b0a16e31a670c7c7bf7877db9a52ca53f4a36.