Paris ? President Nicolas Sarkozy said Friday that he wants to revoke the French citizenship of immigrants who put the lives of police officers in danger as part of a “national war” on delinquency.

In a speech in Grenoble, the site of recent urban unrest, Sarkozy said that the current list of causes for revoking French nationality would be reevaluated and “rights and benefits” accorded to illegal immigrants would be reviewed.

Meanwhile, a video posted on the Internet showing riot police roughly rousting African immigrant squatters, including one visibly pregnant woman, from an encampment at a housing project prompted shocked reactions around the country.

The video shot by a member of a housing-rights organization shows police wearing leg protection pulling women, some with babies on their backs, and in one case dragging a woman across the ground with her infant trailing behind in the dirt.

No one was injured in the July 21 operation in La Courneuve, a suburb northeast of Paris, local officials said, but human rights advocates denounced the “brutal evacuation” of some 200 people.

The French president, a former interior minister, has projected a law-and-order image, and named a former police official as prefect, the highest state authority, for the region around Grenoble after youths and police clashed this month at a housing project that is home to many immigrants.