rights?
I agree we can't love (or know) everyone. (see Duncan Number) But most folks (far more than half and probably closer to 90-95%) don't mean any harm (at least to total strangers--most individual aggression occurs between people who already know and interact with each other).
Education helps (although real life education into social resource issues such as pollution are painful lessons for the body politic over generations).
I think the idea of 'rights' enshrined in the US Constitution is a good start. Unfortunately, it seems that most of the people who talk about rights nowadays talk about their own rights against everyone else; they never talks about everyone else's rights against their own.