"If you mix art and politics, you get propaganda"
Edit: maybe it’s Politics with an uppercase P rather than politics with a lowercase p? That would make more sense.
"If art gets involved with politics, it stops being art and becomes propaganda."
I think it was some kind of retort to the Frankfurt school[0],[1] philosophical movement.
[0]https://en.wikipedia.org/wiki/Frankfurt_School
[1]https://en.wikipedia.org/wiki/Cultural_Marxism_conspiracy_th...
Does that actually make any sense to you?
Would you consider Guernica by Picasso[1] propaganda?
[1] https://en.m.wikipedia.org/wiki/Guernica_(Picasso)
If you mix art and politics, you get politics