Hello and welcome to the Intelligence on Economist Radio. I'm your host, Jason Palmer.

Every weekday we provide a fresh perspective on the events shaping your world.

To be a democratic presidential candidate in America these days is to have big transformative

ideas. But those ideas would go nowhere if Republicans maintain their Senate majority.

Some is, the best contenders to take back Senate seats, are too busy buying for the presidency.

And the Democratic Republic of Congo is one of the largest sources of Queenine, a chemical

that protects against malaria. It also has the world's second highest rate of the disease.

We look into why a homegrown cure isn't having enough effects.

But first, more than 200 people were detained yesterday in Russia after protesters marched

across the country. Demonstrators uploaded videos of chance calling for freedom and criticizing

President Vladimir Putin. There had been a week of outcry after the arrest of journalist

Ivan Golanov, who had dug into official corruption. When Mr. Golanov was released, he thanked

his supporters and said he hoped no one else would face the same fate. It looked like

a win for free speech. The truth is more complicated.

Yesterday was an important day for Russia. It actually was a national holiday.

Akadi Ostrovsky is the economist's Russia editor.

So what happened yesterday on this national holiday, on this national days, that the Russian

liberals, the opposition came out in the streets under the Russian flags.

Protesting against police brutality, protesting against the lack of the rule of law, defending

a journalist, a prominent journalist who had been a week before that was arrested and had

drugs planted on him.

So let's wind back a bit. Tell me about the journalist who had been arrested.

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