Dallas shooting: Obama urges US to ‘reject despair’

President Barack Obama has urged the US to “reject despair” as he paid tribute to five police officers killed during a deadly sniper attack in Dallas.

He told a memorial service in the city the US must “try to find some meaning amidst our sorrow” and could unite.

Read more: http://www.bbc.com/news/world-us-canada-36776349