Keep in mind that you're connecting each of these with the concept that law enforcement is alienated from the communities they police. If you don't support this in each point, you risk straying into irrelevant territory. Avoid any information that is obsolete to your thesis. Be sure your Main Points are made up of sound claims and utilize critical reasoning. Tell the reader what is significant about the essay he just read.
Strong conclusions can leave indelible impact.
Be sure to have a strong conclusion. Again, tell the reader WHY this essay was important. Good luck with your writing.