The same argument could have been made for any persecuted minority living in America at that time. Just packing your bags and leaving to go somewhere where you "might" not be discriminated for being black or Irish or Chinese isn't realistic. So many immigrants were taking a huge risk just to get to New York or Boston or San Francisco, that as soon as they found ANY kind of work that kept their ribs from meeting their spine, they took it, even with the discrimination and lousy conditions, because they were not about to risk their lives, and the lives of their families, rolling the dice again. However, after a while, when the conditions get egregious enough, the minorities start to agitate for equality, just as it seems the lower classes in Columbia seem to be doing.