Sec.  35.27   Justification;  use  of physical force in resisting
                   arrest prohibited.
    A  person  may  not  use  physical force to resist an arrest,
whether authorized or unauthorized, which is  being  effected  or
attempted  by  a  police  officer  or peace officer when it would
reasonably appear that the latter is a police  officer  or  peace
officer.
.

(For verification consult Official Text at Senate Gopher site.)