President Barack Obama, wearing a traditional Jewish yarmulke, speaks at Adas Israel Congregation in Washington, Friday May 22, 2015, as part of Jewish American Heritage Month. The president addressed one of the largest Jewish congregations in Washington to highlight efforts to combat anti-Semitism, a problem he says has created an intimidating environment worldwide for Jewish families. The appearance coincides with Solidarity Shabbat, devoted to showing unity by political leaders in Europe and North America against anti-Semitism. (AP Photo/Jacquelyn Martin)