A man who runs public speaking seminars faced severe backlash on social media from Marines and veterans groups after he dressed up as a drill instructor during one of his recent engagements. Marines took to Facebook and Twitter to launch a social media campaign to stop Marc Accetta, the founder of a company that provides seminars and training programs, from donning official Marine Corps uniform items during his engagements. [HTML4] The photo, which showed Accetta dressed as a first sergeant with the classic DI smokey cover, appears to have been removed from Facebook. And just hours later, Accetta issued a…