Atwitter over a Tweeted call: Pray for London

Pray for London.

That's one of the top phrases trending on Twitter Tuesday. It has its own hashtag, meaning there are enough folks focused on the topic that it's earned a moniker. The other top Twitter trends today: "Dirty Dancing" "Eric Williams," and "Teen Wolf."

In a sphere often dominated by celebrities and lighter fare, the presence of a prayer campaign is a bit unusual.

At the heart of the #prayforlondon tweets is the Evangelical Alliance, the largest body serving Evangelical Christians in the UK. It called for a prayer vigil in Ruach Ministries in the Gaumont State of London at 7 p.m. Tuesday.

Christians were invited to join in prayer for those afflicted by the riots shaking the country.

"The arson, looting, violence and vandalism carried out in the past few days is both shocking and unacceptable," said Steve Clifford, the general director on the Evangelical Alliance website. "It's our communities that are being ransacked. Neighbors are losing their livelihoods and lives are being put at risk. Against such a background, the church is already taking immediate action."

In addition to offering the vigil, the Evangelical Alliance encourages people to do things like bake for policemen and firefighters, buy from small shop-owners, and help clean up the city. Many locals have leapt into the work with zeal.

Of course, Twitter, being Twitter, has not been without its celebrity component, even on this subject.

For example, TV talk show host Piers Morgan tweeted this afternoon: "I sincerely hope the police have been authorised to use 'whatever force necessary' against any rioters tonight."

At the same time London native Kelly Osbourne has stated she is "busy making sure friends are safe" and "glued to the news."

And Justin Bieber has said that, though he had been "out of the loop" when the news broke, his prayers go to the people of the UK.

Based on the Twitter traffic, it appears Bieber's tweets have alerted his legions of "beliebers" to the cause, as well. Among the fan posts:

"Watching the news and listening to them talk about London. So sad. Please #prayforLondon" writes BeliebforLife.

"There's no sense in destroying your own city.. This is just sick. #prayforlondon or more like #prayfortheuk since it's not just london," tweets iGoogleBieber.

"i close my eyes, and i can see a better day, i close my eyes, and pray. #prayforlondon ♥" - TheJDBieberTeam