There is a strong selection bias involved here, but it is not the one you claim. The selection bias is: people who care strongly about perceived injustices and

There is a strong selection bias involved here, but it is not the one you claim. The selection bias is: people who care strongly about perceived injustices and political failures devote their time and attention to politics, and people who devote their time and attention to politics (especially listening to a broad range of people in their communities) end up learning about what isn’t working for people and how people are suffering. Then those political actors (organizers, activists, political staffers, policy analysts, campaign staff, journalists, NGO staff, ...) put effort into sharing their message and ideas and some e.g. end up getting elected. If large numbers of people who “sound like your mom and aunts” get heavily involved in their local and regional political process, some of them will end up with their faces on cable news or whatever. It’s not like typical media outlets dial random telephone numbers until they hit on interview subjects who match the ideology of some secret cabal. For better or worse though, in general older first-generation immigrants (of whatever background) are less involved in politics than more established groups. This comes down substantially to their own preferences about what to spend their time on, as well as cultural comfort/fluency, etc.