Lady Gaga Performs 'Imagine' at HRC Dinner

“It is a privilege to be here tonight to open for Lady Gaga." - President Barack ObamaThis past weekend, Lady Gaga traveled to Washington DC to once more pledge her undying support for the LGBTQ community! Watch her unforgettable rendition of John Lennon's "Imagine" from the 13th Annual National Dinner of the Human Rights Campaign!But Lady Gaga didn't stop there! Before marching alongside