What are the elements of a motion for municipal liability?

[municipal] liability, a plaintiff must establish that he was deprived of a constitutional right and that the city had a policy, practice, or custom which amounted to 'deliberate indifference' to the constitutional right and was the 'moving force' behind the constitutional violation.") (citing Van Ort v. Estate of Stanewich, 92 F.3d 831, 835 (9th Cir. 1996), cert. denied, 519 U.S. 1111 (1997)). With respect to the last element, "[t]here must be a direct causal link between a municipal policy or custom and the alleged constitutional deprivation." Villegas v. Gilroy Garlic Festival Ass'n, 541 F.3d 950, 957 (9th Cir. 2008) (en banc) (citation and quotation marks omitted).