On June 14th, approximately 200 left wing activists hindered a pro-family demonstration of about 50 Christians to proceed on the registered route. After the police unsuccessfully tried to persuade the left wing activists to leave, they took their names. Five activists who refused to show their ID were briefly arrested.
Sources:
http://mobil.diestandard.at/2000002034297/Wirbel-um-Anti-Abtreibungs-Demo-in-Wien?dst=t.co
http://www.slp.at/artikel/gewalt%C3%A4tige-rechtsextreme-und-katholische-fundamentalisten-beim-marsch-f%C3%BCr-die-familie-5854