Take your regular feminist: take away the idea of equality, take away all trace of rationality, add hate for everything fun/male, boost it with the unlimited ignorance of the special snowflake community of Tumblr

Tadaaa! You've got a feminazist!
Now take your feminazist and add about 5,000 more of them. Now they all share the same ignorant ideology and then we can add "ism" to feminazi

Taadaaaa! Now we got feminazism

Solarpunk is a movement focused on a positive, ecological vision for a future where technology is used for human-centric and ecocentric purposes. It is a literary, artistic and aesthetic sub-genre and is also closely tied to eco-political activism. Solarpunk narratives have a distinctly positive and utopian foundation in contrast to the often dystopian visions found within other "punk" science fiction genres.

The practice of sexism, extremism, terrorism, misandry, racism, heterophobism and/or oppression hidden by a claim to be practicing feminism. Often found to be scapegoating heterosexual men for all societal and cultural problems. The term was coined sometime during the on-going current third wave feminist movement.
Feminazi- Noun