A video circulating on social media on Saturday shows a group of truckers from the "Freedom Convoy" blowing curved horns, or what Jews call "shofars." These ancient musical horn are typically made of a ram's horn and are used for Jewish religious purposes. Chabad.org explains the meaning and purpose of a shofar as: "a trumpet made from the horn of a kosher animal with the marrow removed." It is blown during the High Holidays of Rosh Hashanah (the Jewish New Year, which consists of 2 days of religious services) during the month of Elul, and at the end of Yom Kippur to mark the end of the day of fasting. It symbolizes a cry from the soul.