Its sad that Ayu cant walk around like she want were she want but we also need to put ourselves on the polices shoes. I love her with all my heart but look at it this way. When she appears in event as big as the book realease was and she doesnt anoucces herself the police is not ready for the flood of fans that cover the streets. As a result fans could get hurt in an attemp to see Ayu. The police not being anouced of the event is not ready and doesnt have any security messures for the people there. For example a street overly filled by fans pushing one another to get a glimps of Ayu could end up in fans falling and getting hurt,cars passing could hurt someone (if this was anocced the police would have block the streets preventing cars to pass), without the police being ready for it a feud could come up out of nowhere among fans and so on.
On another point of view the police also needs to think: whats done its done. They cant punish Ayu for something that already happend. They should just leave her alone with a simple warning and tell her that she needs to anouce events as big as book or cds promotional events to the police.
I feel sorry for Ayu. Being famous sound like a lot of trouble sometimes.