I really dig this XKCD cartoon.

There is this certain tendency I think, when social justice issues are brought up for certain people to react with "But but it's so hard to [blank]" where the blank is filled in with items like the following:
keep a transgender/transexual persons' pronouns straight
avoid using ableist language like "stupid" "lame" "dumb"
stop saying "that's so gay" when one really means "that's so stupid"
saying Happy Holidays rather than Merry Christmas (unless one knows the person you're greeting happens to be Christian and/or does not mind being wished a Merry Christmas)
change a sports team name like "Redskins" to something not racist
and so on.

In any event, I don't think I've found a better response then to such an attitude then the following XKCD cartoon. Pay particular attention to the mouseover text.