German police officers control the traffic flow from Poland near Frankfurt an der Oder, after Germany tightened land border controls to stop irregular migrants. The move has sparked protests from other EU members, including Poland. "By introducing nationwide border controls at all borders, we believe that this essentially renders the Schengen Agreement absurd," says Jan Augustyniak who is a member of the municipal council of Frankfurt(Oder) party Die Linke (The Left) IMAGES AND SOUNDBITES