<p>ATHENS, Greece (AP) - Greece's interior minister says the massive protest riots in cities across the country are "unacceptable" but insists that police are doing all they can to protect people's lives and property.</p>
<p>Thousands of youths are rampaging through Athens, the northern city of Thessaloniki and several other cities in the third day of riots Monday after police shot and killed a teenager on Saturday.</p>