Almost everyone knows philosopher Jorge Santayana's aphorism: those that ignore history are condemned to repeat the past.

Perhaps without meaning to, the Mayor Peñalosa's administration gave an unexpected victory to Bogota's graffiti.

To oppose tax increases is easy and popular. But structural tax reform, with emphasis in correcting existing inequalities, is urgently necessary.

Some readers, like the op-ed writer Daniel Mera, attacked my recent op-ed about South Africa and Colombia, in which I argued that it is contradictory to admire Mandela and the South African transition and consider unacceptable the agreement about justice and victims between the FARC and the government.

Human rights advocacy continues to be an issue that awakens intense passions.

An old university colleague writes in a newspaper and sends us his op-eds weekly to a group of his old classmates. 

Evil, that condition that doesn't usually have an adjective, has been given one in South America once the atrocities of the Argentine military dictatorship were uncovered.

Alejandro Reyes revived the land restitution debate: how to determine which land was voluntarily sold, despite having taken place in areas influenced by the armed conflict.