Earlier quoted context omitted.
Considering the article mentioned that the city was left leaning and also referenced Marx, I guess it's not surprise that they opted to tax people out of their property so that the city could acquire it.
Is that what they did? If by that you mean that they used the tax system to discourage the development of investment properties and undeveloped land as well, then yes I guess. However land value taxes aren't a marxist idea, in fact LVT has been advocated for by Smith, Ricardo, Friedman, Stiglitz, and so on. Even a lot of libertarians like LVT.
I'd love to see the data for Libertarians promoting land tax.