In a 42 U.S.C. section 1983 action based on a late-night confrontation with several off-duty police officers, dismissal of the action is affirmed where: 1) the election of remedies provisions in Tex. Civ. Prac. & Rem. Code 101.106 applied to state law intentional tort claims against a governmental unit and its employees; 2) plaintiff did not allege facts to suggest that the officers who assaulted him misused or abused their official power; and 3) bystander officers had no constitutional duty to prevent the alleged assault.