WHY DOUBLE STANDARD for BN & PR

Why there are double Standards?

Pemuda UMNO organized an illegal gathering to Karpal Singh's Office with the police escort, they was not stopped nor arrested. Why?

I can see the video of their gathering and it shows the police officers are commanding the group to stop and to walk.Who organized this gathering?Why no WARNINGS in media from TAN SRI MUSA HASSAN , telling civilians and any group members not to take part in the gathering or else will take further action as what he told in Perak when he get to know that there will be an illegal gathering to protest against Sultan's decision? Why FRU who present there didnt stop the crowd in the initial stage? Is that no command to the FRUs? Who have the authority to command and why didnt catch the Guy who was leading the crowd couse he was talking sensitive words infront of Karpal's Office.
This is What He said :
"
Esok satu KUALA LUMPUR tak boleh jalan.Ini baru 0.1% sahaja. Setiap minggu kita akan but macam ini dan lebih banyak lagi akan hadir.Karpal Tarik balik dan jangan ganggu institusi Sultan.biarkan sultan dengan orang-orang Melayu buat keputusan.Pemuda-pemuda UMNo, Pemuda-pemuda Melayu sudah la bertabal "
view this ideo for evidence
http://www.malaysiakini.tv/video/16675.html

WHY NO ARREST ???????????????????????????
IM NOT HAPPY WITH WHAT IS GOING ON IN THIS COUNTRY. I DONT HAvE TO BE A POLItician OR AN MP TO ASK THIS QUESTION.IM A MALAYSIAN WHO HAVE THE RIGHTS TO ASK.PLEASE ANSWER THIS? WHY DOUBLE STANDARD AND WHY NO ARREST?WHY POLICE ESCORTED THEM?