Well there you go then. They might have handled it differently if they'd had an idea of the scale of the protest or looked into the alert further. The supposed 2 tier policing was due to operational incompetence not a deliberate decision.
Not just a reply to you AS as quoted, but a wider reply to the thread.
May I just intervene here a little? Nuance here is critical. Different groups have indeed received differential treatment. There is a gap between what the data presents to reality on the ground for serving police officers.
For example, there was a high number of arrests at JSO protests compared with other groups and certainly that is the case in comparison with cosplaying knights of the realm.
JSO wear hi viz, no costume. They have anticipated, accepted, even welcomed arrest as part of their strategy. Their 'resistance' if you can call it such has been to go 'limp'. This removed any allegation of accessory charges such as 'resisting arrest'. The police are therefore in a position of making arrests at the scene with little amplification of the disruption.
Anti-genocide protesters include in their number, some people who have carried no placards, have worn clothing without messaging, sat alone on the pavement listening, though perhaps occasionally applauding. The police have used lawful powers to remove them, they say. The real argument here is whether the 'terrorism' supplement to sentences represents justice.
The 'knights' wear masks to conceal identity and operate to evade arrest. They commit accessory crimes. which hitherto has not resulted in a similar number of arrests. Police tactics are not to inflame at the scene but to rely on tech for later identity and raids.
Some might like to accuse the police of two tier policing. I advocate a more considerate approach to real world policing conditions.