Workers like tips. For millions of restaurant servers and bartenders, tips are cash-in-hand that can be spent that day for groceries, bills or entertainment. The money isn’t bad either... Despite these facts, union front groups known as worker centers are leading an aggressive campaign to eliminate tipping from American restaurants. One of the more prominent critics of tipping is labor activist Saru Jayaraman, co-founder of the Restaurant Opportunities Center (ROC). Jayaraman has attempted to label tipping as sexist, racist and other hot-button terms meant to stir emotion and shame consumers. But the provocative terms used by Jayaraman and other activists...