How do we pin down "new social movements" when they are so various as to be only unified through what they are not: they are not "social movements," those often proletariat-led beasts that chewed us the contours of the early twentieth century. This book notes many of the social shifts in the content, context, and functions of what have been dubbed "new social movements."
Of particular interest is Melucci's claim that examinations of social movements often ignore the processes of social movements (identity formation, e.g.) in favor of the products (protests, the repertoires of Charles Tilly, e.g.).
Another take-away is Melucci's argument that new social movements often take the form of a symbolic challenge. In regard to this, I found the new social movement goal of "rendering power visible" something I'd like to think about a bit more.