It seems like people have forgotten some of the basic rules of what it means to be civilized. Remember in kindergarten the phrase “If it’s not yours, don’t touch it.”? That lesson apparently doesn’t translate to everything.
These days property owners have to put signs on the property saying “private property no trespassing”. Otherwise, if someone comes on to their property they are liable for anything that happens. This seems completely backwards. If it is my home and my property it isn’t yours. If I have not invited you on to it then you shouldn’t be there. Private property owners shouldn’t have to put a sign up at all.
Their “sign” is the fact that it is their property.