Well, the signs are ideological, in that they conflict with the state-enforced ideology. Curiously, churches are getting in trouble discussing the beatitudes, since they (yes, Jesus' own words) are in conflict with the state-enforced ideology.
What is scary is when there's insufficient resistance to the state-enforced ideology that runs contrary to classic virtues / traditions of compassion, hospitality, mercy, etc. This is the banal evil that lets abductions, renderings, concentration camps and eventually genocide happen.
If you don't fight with banners today, you'll have to fight with guns tomorrow.