A labor activist who was arrested two years ago for his role in protests against low wages in Bangladesh’s garment industry was found murdered outside this city last week, labor rights advocates and the police said on Monday. The killing of the activist, Aminul Islam, marks a morbid turn in the often tense relations between labor groups, on one side, and Bangladesh’s extensive garment industry, which makes clothes for Western companies like Walmart, Tommy Hilfiger [part of Phillips-Van Heusen] and H&M...Walmart and Tommy Hilfiger, in e-mail statements Monday, pledged their commitment to improving conditions for Bangladeshi workers. H&M did not respond to a request for comment.