""It could mean that someone feels uncomfortable...."
Thanks Lox - something to think about."

No - it couldn't mean that someone feels uncomfortable.

That isn't what tolerance means.

But in many diffferent contexts, such as where people disagree, or where people have different ways of doing things - like washing up ... tolerance can mean "being accepting and respectful of how others are different to you."

A classic example might be a married couple who get on 90% of the time but are 10% incompatible. It could be that a common source of tension is the manner in which the dishes are washed. I do it one way and you do it another.

If both are intolerant of the differences then they might end up bickering and falling out. If they learn to tolerate each others differences then they will probably succeed as a couple.

A gay couple might learn to tolerate each others differences.

A woman might tolerate the flirtatious habit of a close male friend - or vice versa.

We are all different and there are some people who instinctively feel uncomfortable about homosexuals and homosexuality.

I consider myself lucky for not being afflicted by any such handicap.

But I don't judge anyone who is.

I do react strongly when people decide that they have the right to Judge homosexuals, when misinformation is peddled about homosexuals and I stand up to people who would like to limit the civil rights of homosexuals and victimize homosexuals.

By "tolerate" we do not only have to mean "put up with" which is how you are understanding it.

A tolerant society is one where those who disagree or are instinctively incompatible with homosexuals learn to be respectful of their civil rights and accepting of their place in society and learn to coexist peacefully in the workplace and elsewhere with gay colleagues etc.

It is unrealistic to expect everyone to be friends with everyone all of the time.

That's where the notion of cultural and political tolerance come in.

You asked "Is it a crime?"

Society doesn't tolerate crimes. It does tolerate my point of view and yours and it tolerates both our sexual orientations too regardless of what they might be.