if you could pass yourselves off as old Japanese you might have been able to blag it as a cultural misunderstanding, as the old folk used to do things like that in JP until very recently.
Not just one megaphone but a load of them on a medium size open decked bus, 4 loud horn speakers and portable PA amp and all the traditional dress and banners, they were carrying on as if they were going to invade Malaya and the Phillipines again but on a bus.. I saw a cartoon of this a Malaysian satirical cartoonist drew on a visit there in the 1980s…
I think they may have stopped since a quarter of the country got destroyed by earthquake and the nuclear station blowing up and the rest of the oldies got chased by bears (due to them encroaching onto the bears habitat). And it was that culture of taking “respect for elders” to extremes what caused these things to happen, so instead they are now going to get (bear and earthquake proof) sheltered housing and if they are going about on buses they go to mah-jong or tea ceremonies or whatever normal things old people do in Japan – just like every other civilised nation does today for their older folk).
At least these incidents have finally taught the Japanese they are not indestructible and to stop taking the piss with their environment and the planet as a whole, whilst carrying on with making cool things like cameras and miniature electronics and wristwatches (reminds me I should order that watch before they are all gone – it was part of a peace offering to JP on behalf of all my family and ancestors, but the first watch disappeared from sale, I think the earthquake did for the factory making most of its components 😥 )
