A political adjective used to describe speech or rhetoric that sounds like a series of repetitive, pre-packaged slogans, typically associated with leftist organizations. It suggests the person is just reciting propaganda rather than having a real conversation.
You guys always repeat the same things. You are all panfletario.
In Argentine politics, especially within universities, this is a derogatory term for far-left activists, whether or not they actually adhere to the ideas of Leon Trotsky. (Public universities in Argentina have a long tradition of intense political militancy and student-led activism).
For the trotskos everything is the same, and that is how they end up playing right into the hands of the right wing.