Wearing black clothes, Congress leaders hit the streets on Friday to protest against price rise and unemployment, with a host of them, including Rahul Gandhi and Priyanka Gandhi Vadra, being detained by police amid dramatic standoffs outside Parliament and the AICC headquarters here. <br /> <br />Congress MPs, including former party chief Rahul Gandhi, staged a protest in the Parliament House complex and then proceeded to take out a march towards the Rashtrapati Bhawan as part of the party's nationwide stir against price rise, the Goods and Services Tax (GST) hike on essential items and unemployment.