Quote - When I was a smoker, there were people who were justifiably secure in their belief that smoking was a harmful, destructive activity. However, in addition to being secure in their belief, they cared - about me, about themselves, and about others who might be affected by the smoke I spewed. Therefore some of them were not 'tolerant' of my smoking. Based on this example I'd have to say that sometimes intolerance is an act of caring.

Sorry, I disagree with you:
Based on this example I'd have to say that sometimes intolerance is an act of paranoia.

Stupidity also evolves!