“While witnesses urged her to stop, and while Mr. Becerra pleaded with her, Ms. Schultz yelled ‘stay down’ and screamed ‘I have a gun and will shoot,’ ” the lawsuit reads. “She continued to hold him at gunpoint in front of onlookers, relenting only after the police arrived and handcuffed Mr. Becerra under the erroneous impression that he had just committed a felony.”