Latisha Thompson and Paul Prescod are big fans of labor unions and the benefits and protections they’ve won for workers. So much so that they got engaged Labor Day Weekend a couple years ago and plan to get married this Labor Day Weekend. So when they decided to buy their first home, they looked to Thompson’s union for help. Last year was a big one in the Philadelphia region for labor activity, including the formation of new unions. To sell members on the value of a union card, the organizations not only advocate for higher wages and defend workers on the chopping block, they also offer benefi…