to me using labels as tools of rallying seem like a zero sum game, since it is misused so often. Like the label of freedom of speech is misused by racists and white nationalists to garner support from ignorant masses. Maybe it is because people obsess over these labels, like they are holy scriptures or gods. Instead I'd suggest analyzing historical effects of labels, and how they improved things. Then concentrate on the individual ideas behind labels, and shift focus on discussing these ideas instead of the labels. In this way labels could be recycled into actual projects of social improvement without specific ideological focus.
And if you don't believe me that freedom if speech as a label is being hijacked by white nationalists, just google Alt-Right. That's some scary shit. These people advocate for a white ethnostate, but deny any allegations of racism by saying that racism as a word has lost it's meaning. There are some stupid blacks and jews who claim to be a part of Alt-Right right, but I guess their definition of Alt-Right has nothing to do with the actual movement.