[zenith]

I don't think that quote was meant for "all men are physically equal". Since it's usually discussed when talking about racism and anti-semitism.

I think the thing is that all people are born as people. Or that everyone has just as many feelings are you do (unless you are a sociopath [*coughAeoliancough*])

It's kind of a "treat others the way you want to be treated" kind of thing. Just said like every man in a history book would say it.

But "racism" and "anti-semitism" are based on physical differences.  Whether or not people want to believe that.

Just like two white dudes might look completely different because of different genetic backgrounds.  One may have light skin and many freckles with red hair, and the other may have a more tan colored skin and jet black hair.

The "all men are born equal" are meant to be defenses AGAINST racism / anti semitism?

It's saying. Yeah you look, sound, and are different. But I am aware that you are a human being and will treat you as such

Not treating people with respect when they do nothing wrong / dumb is wrong in a moral sense.