Here's one link to official government advice on
protests and marches.
There's a few things that could be done to stop a repeat of the last one.
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The police have the power to:
- limit or change the route of your march
- set any other condition of your march
The police can also:
- change the location
- limit how long a rally lasts
- limit the amount of people who attend
- stop a sit-down protest if it blocks road traffic or public walkways