Honk if you support us - Or not.

[GasEngineer]

The news coverage of the Doctors' strike made me think that its OK if you support the strikers or whoever is seeking a honk of support, but how do you show them that you don't support them and may actually totally disagree with their action?

Just not honking your horn at them is hardly making the point.

Also (as this is the SP&L section) is honking is such a manner regarded as illegal: "Improper Use of the Horn"?