  We study one-dimensional Eulerian dynamics with nonlocal alignment
interactions, featuring strong short-range alignment, and long-range
misalignment. Compared with the well-studied Euler-alignment system, the
presence of the misalignment brings different behaviors of the solutions,
including the possible creation of vacuum at infinite time, which destabilizes
the solutions. We show that with a strongly singular short-range alignment
interaction, the solution is globally regular, despite the effect of
misalignment.
