Holding a sign on a public sidewalk is totally within the realm of free speech. However many of your cowardly friends might decide to avoid you and walk on the other side of the street from now on. The police might come and remind you not to block the flow of traffic to businesses etc. Simply be polite.
Dale Brown and John Hultberg at truck stop. It is good to have literature or videos to give to potential seekers.
Christine Weick talking to Muslims at a mosque in Tacoma, Washington.
Christians speak out at Jehovah's Witness convention