Trades Hall probably can't say 'Punch them' legally or without cops getting agro.
Relinking this recent exposé about the main neo-Nazi group involved in this rally: https://www.youtube.com/watch?v=jo2xBrImsg4
and the White Rose Society guide to media reporting on these scum: https://thewhiterosesociety.writeas.com/9-principles-for-journalists-reporting-on-neo-nazis