On his radio show Sept. 2, 2014, Dennis Prager said it is safe to wear a yarmulke around America but it is not safe to wear a yarmulke in most of Europe, largely because of Muslim immigration.
Dennis was responding to a call from an Orthodox woman in Cleveland who said she was seeing an increase in Jew-hatred. She said her brother went on a road trip and deliberately wore a hat over his yarmulke for fears about safety. She wanted to know if it was safe to sign Prager’s petition StopHamasnow.com. Dennis said it was.
On my trip down under in June, I wore a yarmulke and tzitzit out in regional Australia and received no aggravation. Two goyim came up to me because they were interested in Judaism.