Over 100 passenger and mail train services are being affected, several others cancelled and a few more short-terminated as the Dalit agitation over the alleged dilution of the SC/ST Act escalated in several states.<br /><br />The protesters blocked rail and road traffic and resorted to violence in Rajasthan, Odisha, Bihar, Jharkhand, Uttar Pradesh, Haryana and Delhi.<br /><br />The railways said across its zones, the protesters started gathering at the rail yards since early morning. The services were disrupted when a mob arrived at the Ghaziabad yard around 10 am, Northern Railway officials said.<br /><br />Many trains, including the Saptakranti Express, Utkal Express, Gatiman Express, Bhubaneswar and Ranchi Rajdhani and Kanpur Shatabdi, were stopped ahead of Ghaziabad at Meerut and Modinagar, Northern Railway officials said.