Here are my thoughts on their effect on gullible youth.
In reality, 90% of young followers end up as failures by age 35 or 40.
All the "revolutionary" slogans and thoughts are just feel good things like a movie fight scene. But useless
Read about Soviet Union, Venezuela, China (before it became economically capitalist), North Korea, Ecuador, Cuba...
Cultures destroyed, millions killed and freedom gone.
Because, a life that is led with dignity of earned job or job creation, is very superior to Communist sloganeering and living off governments freebies.
Being independent is very important, unless you have tremendous things to contribute to the society like that of Sanyasis, whom the society itself willingly supports
Explain the futility of becoming a 'use and throw' tool in someone else's larger power grabbing agenda. Leftism always fails!