Exclusive | Woman whose MAGA hat meltdown, subway wipeout went viral is an extremely liberal luxury-brand specialist

She’s going to need a re-brand!The woman who received “instant karma” after berating a President Trump supporter on the subway — and then face-planting on the platform after trying to grab his “Make America Great Again” hat — is an increasingly “agitated” creative director for several luxury brands, The Post has learned.Alberta Testanero, a 55-year-old dual Italian-American citizen, went viral for the caught-on-video incident on the 6 train in Midtown last week after branding the MAGA fan “uneducated” and a “racist.”Testanero has gone off the deep end when it comes to politics, a former colleague claimed.“She and I stopped being friends a while ago, as she became extremely liberal and very agitated,” the one-time coworker told The Post.“I see nothing has changed, but now she’s gotten into the extreme, doing things like this,” the coworker said of the subway incident, adding that Testanero was known to argue with Republicans and frequently call out people she deemed “racist.”A freelance creative director and branding specialist who has worked with posh outfits like Tiffany & Co., Coach, Bergdorf Goodman and Kate Spade, Testanero prides herself on “maintaining the highest standards,” according to her online profiles.“An experienced team leader, I have a keen understanding of the relationship between corporate strategy and creative vision,” the Murray Hill resident and Fashion Institute of Technology alum boasts on her LinkedIn.“No matter how large or small, I approach every project with enthusiasm always furthering brand vision and maintaining the highest standards.”On a Facebook account apparently belonging to Testanero, she shared a family photo of the Obamas and a bizarre image of “Joe” and “Barack” friendship bracelets.The lefty art designer publicly called out the MAGA fan, wagging her finger in his face while aboard a northbound train around 11:30 p.m., according to a video that has since racked up...