The 1948 Czechoslovakia model uses the voting booth to obtain power. To do that they need voters. Here’s one way to get truckloads of new voters. Immigrants who become citizens vote overwhelmingly Democratic. Table 4 from this Center for Immigration Reform link shows voter changes as immigrant population increases in 25 U.S. cities. It gives a pretty good reason why Democrats want more immigrants. They result in Democratic election wins.
Step one of the plan is to recruit voters. Pueblo Sin Fronteras (People Without Borders for you English speakers out there) is a nonprofit group based in Chicago. Glenn Beck gives a good summary of the group, its primary organizers, and some of its activities in this video if you’d like to know more about them.
PSF advertises in Honduras and Guatemala for people who would be interested in coming to the United States to live. That would be a hard sell, wouldn’t it? They then help organize and finance the "caravans" that march 1000 miles across Mexico and end up at our southern border. And you thought it was all a spontaneous.