Guy Matthews is a Labour activist from Nottinghamshire and appeared in a Labour promo video last year.
Joe claims to be a member of both Labour and Momentum, although following a previous Twitter controversy both deny he is a member.
Others used the news to wish the illness on the Prime Minister.
One wonders how many of these foul individuals were - only a few weeks ago - asking fellow Twitter users to #BeKind after the suicide of Caroline Flack?
Be careful what you wish for sickos.