HOW COULD THEY ?

And why would they?
As far as I am aware, treason is is still one of only three offences still punishable by hanging
Surely to rally against your own sovereigns armed forces is an act of treason ?
And yet the powers that be only make three arrests, all of them people who felt aggrieved at this act of hate!
Only in this messed up country of ours could this happen.
For those of you who don't know, this minority decided to spoil the armistice day parade by burning poppies .