The “Joker” is one of the most highly anticipated movie premieres of the year and it has the Yonkers Police Department worried and on alert.

Yonkers officers are stepping up patrols at theater for the premiere amid a concern that the Joker character could somehow inspire someone to commit an act of violence.

The dark theme of the R-rated thriller about the rise of Batman’s bad clown nemesis has brought back memories of a mass shooting in which 12 people were killed and 70 injured at a midnight screening of “The Dark Knight Rises” in Aurora, Colorado in 2012.