From the UK Telegraph:
Kostis Hatzidakis, who is now an opposition MP, was left with blood pouring from his head after being chased and beaten by dozens of protesters.
He was set upon by up to 100 youths, who shouted "Thieves" and "Shame on you" when he emerged from the Greek parliament building on Constitution Square, in central Athens.
Protesters hurled lumps of concrete and paving stones at riot police, set fire to cars and smashed shop fronts.Here is a video of the protests:
Another video with footage of the attack on the former government minister HERE.