You know, I wonder if instead of an "Ignore" botton, we could have a little "Tolerate" button to help us learn to take a deep breath instead of taking offense. Maybe there could be a cheat sheet to help remind us (or teach us in the first place) how to apologize, too.
A lot of times, people find each other's messages so objectionable out of pure misunderstanding. And a little patience and humility (and a lot less defensiveness) might go a long way. And then they might not need the ignore button.