CONCEPCION – One of the world’s most powerful earthquakes in a century pounded Chile on Saturday, killing more than 300 people as it toppled buildings and triggered tsunamis that ravaged a port town and threatened Pacific coastlines as far away as Japan.

Buildings caught fire, others crumbled and bridges collapsed across swathes of central Chile, but the initial death toll was relatively low from a quake many times stronger than the one that devastated Haiti last month.

An apartment block with up to 200 people inside collapsed in Concepcion, the closest major city to the epicenter, and rescue officials said they were unsure how many escaped.

Overturned cars lay scattered below a fallen overpass in the capital Santiago and telephone and power lines went down across the narrow country, making it difficult to assess the full extent of the damage and loss of life.

PORT-AU-PRINCE – Hundreds of Haitian earthquake survivors protested in a suburb of the wrecked capital on Sunday, accusing a district mayor of corruption and hoarding food aid provided by relief groups, witnesses said.

The protest in the Petionville neighborhood of Port-au-Prince was one of the largest since the January 12 quake that killed more than 200,000 people and left over 1 million homeless. It reflected still simmering anger among survivors over problems in the massive international relief effort.

We’ve seen some major world events unfold on the social media stage in the past week, the biggest being Google’s threat to pull out of China and the Haiti earthquake.