Why did the Pope condemn Reagan for trickle down? I thought Jesus said not to judge others..?

[Professor Freedom]

1- The Pope did not condemn individuals; he criticized ideas.
2- The Catholic Church is notoriously favorable to charitable initiatives, whether public or private.
3- There is a difference between criticizing doctrines like "tickle down economics" and condemning capitalism.

A note regarding the doctrine of trickle down economics.
A very superficial and quick look at data is enough to understand that the incomes derived from the production process are distributed in very different ways, even year to year. There is nothing in the data or in the theory which compels high-end gains to imply low-end gains... It's a neat political argument, a feat of rhetoric that might prove useful to drive certain points home in campaigns, but there's nothing like that in textbooks. Going beyond the actual subject, the question of income distribution is the very probably most overlooked, least well covered topic in introduction-level textbooks and courses...

Capitalism has to do with organizing production around a wage-earning labor trade (i.e., some people lend their time, effort and skills in exchange for a wage someone else pays). It has nothing to do with the presence or absence of governmental intervention.