That's not that black or white. Being kind of related to specific groups of immigrants myself I have a specific point of view.
Sometimes you escape from hell to protect your family.
Sometimes it's about your own life.
Sometimes you pursue your own vision of El Hombre Dorado.
Sometimes you are just chasing new possibilities.
I know people matching first case, that after legalizing their stay are strongly against immigration because they are afraid of those from the fourth case. Hypocrisy? Fear? It's easy to pick a single word to define things. Events, people, life stories. A terrorist, a politician, a leftist, a rightist, a jew, a tall tree.