On a visit to relief camps of riot victims in Muzaffarnagar, Rashtriya Janata Dal chief Lalu Prasad Yadav on Sunday blamed both the Bharatiya Janata Party and the Samajwadi Party for the communal violence here even as he heaped praise on Rahul Gandhi, saying Narendra Modi and Arvind Kejriwal were nothing in front of the Congress vice-president.