'Gypsy Tsar' case sets off riots in Bulgaria, football chants tackle politics in Algeria, and more...

STORY 1: BULGARIA

We begin in Bulgaria, where a road accident in a provincial village touched off nationwide protests. A young ethnic Bulgarian man was killed by a minibus driven by an associate of a local crime boss - and a member of the country's Roma minority.

The incident touched a nerve in the village, where many people resent the wealth of Kiril Rashkov, who's known across the country as Tsar Kiro, or the 'Gypsy Tsar.' But it also touched a racist nerve. As elsewhere in eastern Europe, resentment of the Roma is never far from the surface. We head to the capital Sofia, with our Observer Ruslan Trad
 

STORY 2: ALGERIA

Next up we head to Algeria. The oil-rich government has so far been able to head off Arab Spring-type protests by heavy spending on social programs. However, there's still a lot of resentment and frustration among the largely young population. And there's one place it seems Algerians are free to criticise whatever and whomever they like: in soccer stadiums.

We head to Algiers, with our Observer, whom we'll call Amine.
 

STORY 3: WORLD

Now for a roundup of the best photos and videos sent in by our Observers this week.

We begin in Tunis, with Maher Hamdi. It's been 9 months since the Tunisian people overthrew President Ben Ali. Youth unemployment was what sparked the revolution - and it's still as big a problem as ever. Maher tells us the ministries aren't doing enough to help young graduates who can't find work, so they're coming out into the streets again to demonstrate. Their slogans are just as radical as during the revolution against Ben Ali. They're chanting "We have the right to work, you band of thieves."

Next stop Florida, with Chris Colwell. Chris was a skydiving instructor. But then something horrible happened. He was filming one of his students during a jump. Everything was going fine until the student lost control and started falling too fast. Chris tried to catch up to him, and ended up running into him and breaking his own neck. He'll never walk again. Chris is now in a wheelchair. He lives in Dubai and is trying to rebuild his life. He posts videos online talking about his experience and trying to help other people suffering a handicap like his. His intimate, and funny, videos have made him a star online.

Now to the village of Duduza in South Africa, with Michelle et Marius Mostert, who shot an astonishing video. They were just a few hundred meters from a gigantic tornado. It wreaked havoc on the village, destroying dozens of houses, killing one person and wounding 160 others.

Our last stop is Houston, Texas, with Sarah Churman. Sarah is 29, and has been deaf since birth. She learned to speak, but until recently had never heard her own voice. Now doctors have given her cochlear implants. She can hear her own voice and other people's, so she no longer has to lip-read.