because the organizers of the weekly event say they are focusing on the Sunday's big event of encircling the National Diet Building to protest against nuclear power.
According to the organizers (or I should say those who have been particularly vocal on Twitter), their "single issue" (pronounced 'shinguru ishuu' in katakana English, I doubt the majority of Japanese would be able to spell the phrase in English) movement has succeeded in attracting this many people to the protest every Friday, and if anyone has any problem with their stance or policy (no union flags, no talk about radiation contamination, etc.), they say rather disparagingly, "Feel free to organize a protest yourself, if you think you can".
So they think they "organized" it.
I do not know if anyone is showing up at the Prime Minister's Official Residence to protest. Looking at Yasumi Iwakami's IWJ website, a group is protesting against the appointment of the Nuclear Regulatory Commission at the PM Official Residence at 5:30PM, and another group is protesting against the Ooi restart in front of the Ministry of Economy, Trade and Industry Annex Building (where NISA is located) at 6:30PM. It looks the organizers are giving press conference at 6PM.
The protest in front of KEPCO's headquarters in Osaka City is on, as usual:
Date: Friday, July 27, 2012
Time: 6 to 8PM
Place: KEPCO Headquarters, 3-6-16 Nakanoshima, Kita-ku, Osaka City, Osaka
I'm not very enthusiastic any more in promoting this Friday protest at the PM Official Residence by these particular organizers ("Metropolitan Coalition Against Nukes"), but nonetheless I still feel it is important to keep the "voices" (or noise, or sound, whatever it is to the prime minister) heard.
I just caught a tweet by one of the vocal organizers, effectively saying "It is true that one of us works for an event coordinating company. So what?"