They are gathering in “solemn solidarity” becuase the UK is finally getting wise (adnd embarrassed enough globally) to rein in their on-street demonstrations which so often end up careening out of control.
When the harrassment of the “Pritesters” started effecting other people besides Jews, the police and o=government offocials started sayingm “WAIT..You mean they hurt ME too??? I guess we can’t have that!”