Ten Jewish men were arrested after they unfurled Israeli flags and sang the Israeli national anthem atop Jerusalem’s Temple Mount.

What could be so wrong about public displays of national pride in one’s own national capital? Unfortunately for these 10 men, all expressions of Jewishness, be they nationalistic or religious, are strictly forbidden atop the Temple Mount, which ironically is Judaism’s holiest site.

Sheikh Yusuf Adeis, a local Muslim cleric, told Arabic media that the actions of these Jewish men constituted a “heinous crime” and a “violation of all treaties.”