What do you believe to be the cause of fascism, the declining material conditions of Capitalism, or the spread of dangerous ideas?

In my opinion, the latter is only possible if the former is already true. Historically, fascism has been an attempt by the Bourgeoisie and Petite Bourgeoisie to ally and "turn the clock back" to the "good old days." It's why we see so many small business owners riding the Tesla Train, and why Musk has been supporting fascists on X like EndWokeness and LibsOfTikTok. This extreme nationalism and hardcore embrace of "tradition" is economic in cause.

Capitalism leads to fascism or Socialism, whoever wins the struggle as it dies. It's up to Leftists to struggle against fascism at every step so that we can progress forwards, not regress.