I can't agree with that. In medicine, tolerance means the situation when immune system does not attack an antigen. Each society is similar to organism with it's unique features and characteristics. If somebody tries to crash society's moral principles, why people should be tolerant to that? I think that a lot of people can't see difference between tolerance and respect.
I don't have anything against LGBT (I don't want to kill them, limit their rights or something like that) but at the same time I don't want to deal with LGBT propaganda on the streets, schools, kindergardens. Why LGBT for example are not tolerant to the white conservative heterosexual families? How to find balance here?