Peace Berets

"Peace Berets" come in many forms; typically it being the wearer who is associated with 'peace', being a Buddhist teacher, SCW-Veterans, scientists associated with the peace movement, protesters and activists... 

It often is the beret itself that stands for peace.

 
However, there are many berets that leave no doubt about the wearer's intentions. I even found a website selling solely peace berets and similar articles.