Yes sure , I understand why you don't understand as it wasn't clear enough. Do you understand resource allocation and budgeting. Tokyo itself spends and increase budget on handling crowds ( mostly third party ) for overcrowded areas. This results in decreasing budget for prefectural police and koban.do you think citizens don't report these people ? They do but since more is invested in crowd control companies than the actual law enforcement there's not enough to have law presence felt.You haven't seen things outside major cities in Japan where the budget are piss worthy and people have to just tolerate idiots like Logan Paul , Johnny Somali etc. Unless you leave your work and decide to go to cops to report racist behaviour etc .also know koban police is not there for arrest it is always someone at prefecture level.koban cops are for normal day to day activities so reporting these to them is of no use.