Such people aren't interested in having a constructive discussion in the first place, make that perfectly clear in the same sentence as in which they express their opinion, and then proceed to act indignant if the other side responds in kind...
When Adria Richards tweeted that guy's picture in DongleGate, he got fired, and she got called a hero and fashioned herself Joan of Arc (no really). When Feminist Software Foundation appeared on Github, Ashe Dryden tweeted the list of people who starred the repo and suggested their employers should be told. Shanley Kane's medium.com posts are full of blaming "white men", "privilege" and "patriarchy" for this or that, with usually nothing to back it but anger and indignation.
To me, the phrases "twitter witch hunts" and "being branded patriarchal bullshit" seem entirely accurate.
Or would you call that being interested in a "constructive discussion"?