Congress workers today organised a protest march in New Delhi from Teen Murti to 7 Race Course Road over the National Herald case. The party workers shouted slogans against NDA government, accusing it of vendetta politics. <br/><br/>The protesters were detained by the police. Party leader Ajay Maken said they will continue to protest and will not be silenced. The Delhi High Court had yesterday dismissed Sonia and Rahul Gandhi's plea seeking quashing of summons against them and exemption from personal appearance in the case.