Terming the incident in Gujarat's Una, where four Dalits were beaten up for skinning a dead cow, a "shame", Union Minister M. Venkaiah Naidu on Thursday accused the Congress of politicizing the issue and called its Vice President Rahul Gandhi's visit there a "political stunt"."Visiting and meeting the victims' family by Rahul Gandhi is nothing but a political stunt. He is doing this at a time when Parliament is debating the issue. He should have been there (in parliament)," the Information and Broadcasting Minister told reporters at a press conference here."Some politicial parties are trying to instigate one community against another. Those, who are visiting Gujrat today, why they didn't visit Kerala and other places where atrocities on Dalits took place in recent past. They are trying to defame Gujrat," he added.Naidu termed the Una incident, a "shame" on entire system and a "challenge" for it to curb the social problem.He said that BJP and the NDA government are committed for the social cohesion and will take every step in this direction.