<p>Palo Alto may need to call in the Demeanor Police.</p>
<p>The city council is wrestling with a code of conduct that urges elected officials not to roll their eyes. Or shake their heads. Or frown.</p>
<p>Experts say the council's plan to discourage non-verbal forms of ``disagreement or disgust'' is odd, unenforceable and almost an infringement on free speech.</p>