Truth Out has the op-ed How Capitalism Perpetuates Immigration by Richard D. Wolff. I’ll quote but one example from the article.

Modern times offer more examples. The US repeatedly undermined basic living conditions in its de facto colony, Puerto Rico, driving millions to move to the US mainland. There, they repeatedly encountered all manner of discriminations, abuse and scapegoating.

Teaching people about these sorts of things in the off years between elections is what will have people prepared to know which politicians are proposing real solutions, and which ones are trying to distract us from the real solutions.