"Interestingly, even in the United States, where religious freedom is touted as one of the proudest achievements, the concept of she’at ha-d’khak [a time of danger] has been tested, though not in the traditional manner of taking Hanukkah displays inside during times of danger. One modern example: In Billings, Montana, in 1993, a small boy placed a Hanukkah decoration in his bedroom window, only to have it destroyed when a rock shattered the window. In reaction to what was likely vandalism by members of an Aryan group, a campaign was started to have both Jews and non-Jews (the clear majority in Billings) decorate their windows with a hanukkiyah [Hanukkah lamp, also known as a menorah] or with a picture of one. Ten thousand people joined in this campaign, and while several windows were still smashed, this town became quite an inspiration to many who appreciated its courage in the face of religious hatred and intolerance."

From: https://www.myjewishlearning.com/article/public-displays-of-hanukkiyot/