Earlier this year Hakamada was released from death row and his sentence was quashed however he wasn't a totally free man and the prosecution has sought for a retrial ever since. The protest is trying to prevent that retrial and keep Hakamada free for what remains of his life, which is sadly not likely to last long.
As well as the two active champions there was also Koichi Wajima who was among the leaders of the protest.
Hopefully the case will be dropped but if not then at least the case is getting publicity with these public events and this one has followed a previous one, just days ago, which featured Akira Yaegashi and we suspect more are to come.
(Image courtesy of boxingnews.jp)