In general, jaywalking should be legal, but ... There is one situation where some kind of enforcement is needed: crowds of people ignoring pedestrian signals,

In general, jaywalking should be legal, but ... There is one situation where some kind of enforcement is needed: crowds of people ignoring pedestrian signals, and flooding across crosswalks continuously. Then the traffic never gets a chance to move. Cars cannot safely crawl or nudge their way through the throng of people, who feel the protection of collective security. One might argue that such large crowds are an indication that the road should be fully pedestrianized - perhaps by time-of-day, or only for specific shopping holidays (e.g. Black Friday, Xmas). The alternative for these peaks is often manual control of people and vehicles by a police/traffic/community officer, like a school crossing). Perhaps there could be some critical crossings where there is a legally enforceable 'double-red' pedestrian signal.