Speaking of strategies for the left:
I saw a video of a protest at a talk for new students at Glasgow university. Some pro-Palestine, pro-#BDS protesters walked in chanting and holding up a banner and most of the potential future students just sat there looking blank.
Then when the protesters started handing out leaflets some people didn't take them. The video ended then so it wasn't revealed how many people took the leaflets.
But this is a problem I think the left has. When people protest, observers might see the propaganda taking place and either say "Fuck you! Don't tell me what to think!" or might go "Well, I don't know so I'll stay neutral."
And it's like when you say to people you've deleted your WhatsApp. They just think "But I need WhatsApp to communicate with ..." and the notion ends there.
This is one of the key things the left has to overcome in my opinion.
It's about persuading and selling the ideas without eliciting hatred or revulsion, and making people feel they are not be propagandised, that they are choosing to support left politics.