It has been two days since she took center stage, next to the GOP front runner Donald Trump in Tucson. Ever since she showed her support for the billionaire, she has been harassed at her business. ....While KGUN9 was inside Sammy's Mexican Grill, the phone rang several dozen times, many calling Betty Rivas and her family racists, vulgar names and threatening their business. .... Rivas told KGUN9, she's shocked at all the controversy this sign has created because - she took a similiar sign to the Bernie Sanders rally in Tucson. That's right - she has not even decided who...