People leaving propaganda on your property- how are we gonna arrange this in ancapistan? How can we mitigate it in the real world now? I’m fucking tired of it

Some idiot left anti-vaccine bullshit in my car door and put the burden of disposal on me without my consent. I don’t want to hear your opinions on this crap either so don’t bother, it’s not relevant. In an ancap world this would not fall under “free speech” as it violates my property rights. Same with people leaving religious nonsense in my mailbox, or putting a political ad on my door. Just leave me the fuck alone. Buy ad space if you think it’s so important. I use my head instead of getting my opinions from random flyers shoved into my face by strangers. Hell I’d rather they had taped it to the ground next to my car because at least I could have just left it there and it would be on them for littering. Just don’t touch my shit, that’s all I ask. How do we fix this? What would happen in ancapistan if this took place?