The parallel I am drawing isn't between lethal force vs. harassment and invasion of privacy. It's about two situations underpinned with the same type of social/institutional permissions. In the Grant case, permission for police to use possibly lethal force; in the other, for college students to harass their roommates for being gay.

I'm not sure that the two students should be charged with manslaughter, but I am absolutely positive it shouldn't be ruled out just because society as a whole is homophobic, too. Or, just because cops often shoot people doesn't mean Mehserle shouldn't've been convicted of a greater charge. Clearer now? If not, let's just move on.