“The essential elements to pleading a claim for assault under California law are: 1. The defendant acted, intending to cause harmful or offensive contact; 2. The plaintiff reasonably believed he/she was about to be touched in a harmful or offensive manner; 3. The plaintiff did not consent to the defendant’s conduct; 4. The plaintiff was harmed; and 5. The defendant’s conduct was a substantial factor in causing the plaintiff’s harm.”
[California Elements of an Action [certain citations omitted]]