As Houston readers are aware, the recent Occupy protests across the country have resulted in a range of reactions from police and local prosecutors. Compared to some cities, the protests in Houston have been somewhat calm. But now Houston authorities are using more aggressive legal tactics against a number of activists. Police have now arrested seven protestors on the criminal charge of using or possessing a criminal instrument. The "criminal instrument" in question is a PVC pipe used by activists to bind themselves together as police attempt an arrest.