Each week, TEDx chooses four of our favorite talks, highlighting just a few of the great speakers from the TEDx community and its diverse constellation of ideas worth spreading. Below, give this week’s talks a listen.

Let’s find the strength to change our slums: Boniface Mwangi at TEDxKibera
While working as a photographer for a Kenyan news service, Boniface Mwangi bore witness to some of the most horrible atrocities in the country’s recent history. Overcoming self-doubt and thoughts of suicide, Mwangi decided to use photography to inspire change within Kenya’s toxic political structure. (Filmed at TEDxKibera)

Born into a prison camp: Blaine Harden at TEDxRanier
Shin Dong-Hyuk, raised by guards to be an informant in a North Korean prison camp, escaped and found freedom in the outside world, but soon realized living with freedom wasn’t easy. At TEDxRainier, Blaine Harden shares Shin’s story to explain the effect of totalitarian governments on their citizens’ mental health, and to raise awareness that — someday — integrating millions of North Koreans into free society might not be as easy as we think. (Filmed at TEDxRainier)

The first school for Maasai girls: Kakenya Ntaiya at TEDxMidAtlantic
Growing up in the Maasai culture, Kakenya Ntaiya faced genital mutilation and forced marriage; her education might have ended at age 13. Against the odds, Ntaiya convinced the men of her village to allow her to attend college, and in this talk at TEDxMidAtlantic, she explains how she returned to her village to start its very first all-girls school. (Filmed at TEDxMidAtlantic)

The three sides of corruption: Afra Raymond at TEDxPortofSpain
From pork-laden congressional bills to revolving-door lobbying jobs, corruption is an all-too-familiar aspect of political behavior. Afra Raymond insists on eliminating it. In this passionate talk from TEDxPortofSpain, he lays bare the rampant corruption in his nation of Trinidad and Tobago, and shares important lessons for every concerned global citizen. (Filmed at TEDxPortofSpain)

And here, some of the week’s highlights from the TEDx blog this week:

• TEDxChicuque, the first TEDx event in Mozambique, shines a light on Mozambiquan stories
• Introducing TEDx ice cream
• Say cheese. Portraits from Benjamin Borley’s photo series “The faces of TEDxExeter”
• TEDx speaker running for president in the Czech Republic
• Pixels rule at TEDxRiodelaPlata