<span style="color: #222222;">The Election Commission today issued a show cause notice to Delhi Chief Minister Arvind Kejriwal for posting a video and said,  prima facie it has the potential of disturbing communal harmony. </span><br />'' <br />'' <span style="color: #222222;">On his Twitter handle, Mr Kejriwal had posted the video to target the opposition. Mr Kejriwal has been asked to respond to the notice before 5 PM tomorrow. </span><br />''