ideological barrier (noun)

1. The ideological barrier between the two comedians prevented them from collaborating on a hilarious skit.

2. The ideological barrier between the two religious groups led to constant clashes and intolerance.

3. In the horror movie, the ideological barrier between the protagonist and the supernatural entity intensified the suspense and fear.

4. The novel painted a futuristic world where an ideological barrier prevented humans from coexisting with advanced alien species.