How to Block Annoying Political Posts on Facebook is a Lifehacker video that will show you a third party app that will allow you to filter out “Trayvon Martin” or “Zimmerman” from your FB news feed. No need to block friends or unfollow people or pages you like. Just take some time to set up an auto-filter.
Setting up privacy levels, auto-filters, etc., is a 21st century basic skill we all need.