The Miranda Lambert/Chris Brown feud doesn't seem to be abating at all.   When Miranda tweeted her displeasure about the R&B singer's appearance at last weekend's Grammys, it sparked a Twitter war between the two.    Three years ago, Brown was arrested for physically assaulting then-girlfriend Rihanna.   "Chris Brown twice? I don't get it," Miranda tweeted the morning after.  "He beat on a girl ... Not cool that we act like that didn't happen. He needs to listen to Gunpowder and lead and be put back in his place. Not at the Grammys."    Miranda's ire is no doubt fueled by the fact that her parents were private investigators who frequently took in abused women, which lead to her writing revenge songs like "Gunpowder & Lead."    Brown fired back, "Hate all you want becuz I got a grammy now!  (then some off color comment that was later removed."   Back to Miranda, "For all who are asking ... I have a Grammy too," she tweeted back.     Miranda continued posting anti violence tweets throughout the week.  Thursday, she took her anger against Brown to the stage during her show at the University of Massachusetts.    Before launching into "'Gunpowder and Lead,"  she held up a neon green poster that said, "Take notes Chris Brown."    

"I've been in a world of hurt with Chris Brown fans lately," the New York Daily News reports Miranda said,  "But see, I just have to speak my mind because where I come from, beating up on a woman is never OK ... So that's why my daddy taught me early on in life how to use a shotgun."     Chris' response to this news from Massachusetts was filled with sarcasm: "Using my name to get publicity? I love it! Perform your heart out!" he tweeted, followed by his only direct mention of Miranda: "Go buy @miranda_lambert album! So motivational and 'PERFECT'!"     Brown is still on supervised probation for assaulting Rihanna, but the restraining order against him has been lifted.   Surprisingly, Chris and Rihanna appear friendly again, with TMZ reporting he went to the singer's birthday party last week.