I agree totally with the mute function, GFPG.  (Truth be told, I agree with you generally!)  I have exercised it on one person, but many more are to follow.  I reject the characterization that I'm not open to dialogue, or that I'm a "snowflake" seeking a "safe space."  In my own family, I would despair of "dialoguing" with a homophobic uncle who, at Thanksgiving, wishes only to disparage, harangue, project, etc.  What riles me most is that most/all seem to consider it their "mission" to "convert" us to "the Truth."