Note the lack of Le Pen supporters rioting following their loss in the French election. Le Pen and her supporters are generally labelled right wing. Right wing… no riots. When Donald Trump and the Republicans won in the USA, those opposing them (generally labelled left wing) rioted, bashed people in the streets, and destroyed small businesses owned by their neighbours.
I suspect there is a correlation here. Those who vote for politicians and parties labelled left wing tend to be young, inexperienced, full of beans about their ideology, and rabid about the idea that their own people and society are evil. That mindset is what leads them to vote left, and also what leads them to lash out with violence against anything they perceive as unjust, unfair, or just not in their favour.