Hans,
The phrase "If I have to explain, you wouldn't understand" comes to mind, but since you asked the question I will attempt a response. Our vests, pins, patches, etc. are about pride. Pride in our choice of motorcycle, pride in the years we have owned, pride in the many places we have gone, pride in our common bond which is the motorcycle experience. Given your level of participation here, I can see you too share these values.
I do not wear my vest(s) to intimidate or threaten others, I wear them to show this pride and (hopefully) to introduce myself to others. Many times I've had someone (I don't know) say "Hey I see you went to the Maggie Valley State Rally" or remark about one of my destination pins or patches that I have. Why hardcore MC clubs would find this a threat I do not understand, but then bullies in groups do irrational things all the time with or without club affiliation; reference our recent incident involving a bunch of thrill riders beating up a guy in front of his wife and daughter.
A vest or jacket that displays these values are not an attempt to look like a Gang Member, and to tell you the truth, the Gang Members that I know, could care less. As previously noted, add bottom rockers and/or a territory, then yes, you are asking for trouble.
OWL