Bonnie Usan Flood was a young antiwar activist in Minnesota and abroad  during the Vietnam War.
In the audio clip below, she talks about her button collection from a series of protests and marches and what they represent to her.

"Now people tend to think of the war as sort of a blurry thing. But, it was a series of discrete different actions on the part of people that combined to help end the war in Vietnam. The pin that stands out to me the most, one of them, is the one that says “SMC” which is Student Mobilization Committee to End the War in Vietnam. Some people affectionately refer to as “the Mobe,” so that’s what they mean when they talk about that.  

"The other ones that have a special place in my heart are all the ones with the Women’s Liberation symbols because that was one of the very first times that that symbol was used. And you see that even back then within the antiwar movement, women were not treated the same way as men were in the antiwar movement. So, the fact that there were women’s contingents that marched as women within the antiwar movement I think is interesting."