How can one user block another user?

[roke_julian_lockhart (Mr Beedell, Roke Julian Lockhart)]

@awesomerobot

Hmmm, is it possible that this person is an admin or a moderator? you wouldn’t be able to ignore them in that case.

Does an FR to permit that use case exist? I ask because regardless of whether it’s a theoretically positive idea to be using an instance moderated by someone personally considered worth ignoring, it’s occasionally a necessity.