WASHINGTON - Israeli Ambassador Michael Oren delivered a keynote speech at the 20th Annual Equality Forum held over the weekend in the U.S. city of Philadelphia, but his selection as the featured guest angered some pro-Palestinian activists in the LGBT community. The forum is intended to celebrate the rights of Lesbian, Gay, Bisexual, Transexual, Transgender, Queers and other individuals, often referred to as LGBT.  This year, the Forum's executive committee chose to honor Israel, with its culture capital Tel Aviv recently listed as the number one gay destination in the world.  The committee invited Israel's Ambassador to Washington to address…