The recently maligned National Portrait Gallery was the setting Thursday night for a protest over its controversial removal of a video piece, A Fire in My Belly by artist David Wojnarowicz, from its GLBT-focused exhibits. TBD reports that a crowd of about 100 people showed up, walking from the Transformer Gallery, which started displaying the 4-minute segment in question the day before, near Logan Circle to the front steps of the National Portrait Gallery on…