My concern isn't over any genuine march/protest but G20 protests just get a load of student/druggies/big issue sellers that want to cause disruption by violence and vandalism. The fear they put in to ordinary people going about their work just winds me up and just wish the police didn't have to waste their resources on this.
And as usual genuine protestors are written off because the police & the press lie about numbers & sensationalise the oddballs to defuse the protest.