Much like UFW organized consumer boycotts starting in the 1960s, the community needs to help these workers. In the beginning shoppers would refuse to patronize supermarkets carrying non-union grapes. As time marched forward through the next decades, it morphed into refusing to buy any grapes. Only relatively recently have those boycotts lightened up.
Putting aside (at least for now) arguments on immigration, everyone suffers when a class of exploitable workers exist. After all if an employer can hire someone for five dollars an hour without fearing punishment then it will break wages across workforce. More importantly, we need to remember success is not a zero sum game. Sharing wealth more fairly will put more people back to work because we will have more consumers and more stable neighborhoods. In the meantime, kudos to NLRB.