* https://www.washingtonpost.com/news/wonk/wp/2016/02/18/i-dare-you-to-read-this-and-still-feel-ok-about-tipping-in-the-united-states/ https://www.washingtonpos

* https://www.washingtonpost.com/news/wonk/wp/2016/02/18/i-dare-you-to-read-this-and-still-feel-ok-about-tipping-in-the-united-states/ https://www.washingtonpost.com/news/wonk/wp/2016/02/18/i-dar... * https://www.washingtonpost.com/posteverything/wp/2015/01/21/whats-behind-racial-differences-in-restaurant-tipping/ https://www.washingtonpost.com/posteverything/wp/2015/01/21/... * http://www.slate.com/articles/business/moneybox/2013/07/abolish_tipping_it_s_bad_for_servers_customers_and_restaurants.html http://www.slate.com/articles/business/moneybox/2013/07/abol... * http://www.esquire.com/food-drink/restaurants/a23132/why-tipping-should-be-illegal-15603180/ http://www.esquire.com/food-drink/restaurants/a23132/why-tip... * http://www.wagehourlitigation.com/files/2015/10/cornell.pdf http://www.wagehourlitigation.com/files/2015/10/cornell.pdf * https://news.ncsu.edu/2012/04/wms-rusche-restaurants/ https://news.ncsu.edu/2012/04/wms-rusche-restaurants/ * http://viewfromthewing.boardingarea.com/2016/02/19/45436/ http://viewfromthewing.boardingarea.com/2016/02/19/45436/ * http://business.time.com/2013/11/18/worst-restaurant-customers-ever-use-religion-racism-as-excuses-for-not-tipping-waiters/ http://business.time.com/2013/11/18/worst-restaurant-custome... * http://www.npr.org/templates/story/story.php?storyId=1329241 http://www.npr.org/templates/story/story.php?storyId=1329241 * http://www.tippingresearch.com/uploads/JFSBR_race_revision_article.pdf http://www.tippingresearch.com/uploads/JFSBR_race_revision_a... This is not (just) my opinion.