Do you think it is acceptable or unacceptable for an employer to fire an employee for doing something that is not illegal but which the employer thinks is wrong outside of work?

Do you think it is acceptable or unacceptable for an employer to fire an employee for doing something that is not illegal but which the employer thinks is wrong outside of work? Published on October 6, 2015 → Survey conducted on October 6, 2015 on 3190 U.S. adults