Harsh reminder that authoritarians dont want to debate ideas. They just want to eliminate the opposition.
Russian opposition figure Alexei Navalny is unconscious in hospital with suspected poisoning, his spokeswoman has said.
The anti-corruption campaigner fell ill during a flight and the plane made an emergency landing in Omsk, Kira Yarmysh said on Twitter.
She said they suspect that Mr Navalny was poisoned by something mixed into his tea.
Mr Navalny is a staunch critic of President Vladimir Putin.
In June he described a vote on constitutional reforms as a "coup" and a "violation of the constitution". The reforms allow Mr Putin to serve another two terms in office.
This morning Navalny was returning to Moscow from Tomsk. During the flight, he felt bad. The plane urgently landed in Omsk. Alexey has toxic poisoning. Now we are going to the hospital by ambulance.
A year ago, when Alexei was in the detention center, he was poisoned. Obviously they did the same to him now.
We assume that Alexei was poisoned with something mixed into the tea. It was the only thing that he drank in the morning. Doctors say the toxin was absorbed faster through the hot liquid. Alexey is now unconscious.