Offshoring as shown in the "paradise" papers encourages corruption of public officials, as well as tax-dodging and corruption.

Investments in companies which exercise power, such as Twitter and Facebook, have the potential to influence their use of that power.

Maybe this was just an investment for profit. But then why hide it?

Even if Twitter and Facebook didn't know that they had Russian state institutions as investors, those investors had ways to push for developments that suited them, without revealing who they were.