I think it's highly unlikely to be reserved. I am sure they score less highly on the violent rhetoric scale as the ridiculously named "Maniacs Murder...
Luckily there are still many ways to peacefully protest that don't involve damaging military equipment and leaving the taxpayer to pick up the tab.
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I quite like John McDonnell on a personal level, but Im not sure he's the best person to advise on hijacking parties and unity etc..or maybe he is?!...