Basically what you're arguing for is that we institute a new, theoretically secular version of blasphemy laws
I knew this was coming years ago, after the Charlie Hebdo massacre. Everyone I knew on the left responded with 'Yes, it's terrible. I stand with CH...but...' the but being that they shouldn't have been so rude to Islam, and that people who don't respect sacred cows (whatever they are, not picking on any particular world view here) get what's coming to them.
I'm from the left, and have been for thirty years, and I know that the left has major issues with authoritatian behaviour; de facto blasphemy laws are a manifestation of that.
These laws will flip target at some point in the future, and the people arguing for these type of laws will find themselves on the pointy end of them. It's so short-sighted, in any society that values democratic expression, to back this ruling, and to stand with book burners.