Al Shabab on Woolwich and Boston.

By Zoe Flood, Nairobi9:56PM BST 23 May 2013
Al Shabaab, which is thought to have links with one of the suspected Woolwich terrorists, launched a tirade on Twitter accusing Britain of carrying out countless abuses against innocent Muslims.
In one message posted on its official Twitter account, an al-Shabaab spokesman described the murder of Drummer Lee Rigby as the "death of the wretched Kafir" and said it was "insignificant compared to the deaths of hundreds of innocent Muslims at the hands of British soldiers".
Referring to the Boston bombing, another posting warned: "Where next? You just have to grin and bear it, it's inevitable. A case of the chickens coming home to roost."
Speculation was mounting that the postings, peppered with English phrases, were being written by a Briton.
Seizing on comments by David Cameron that the attack was a "betrayal of Islam", al-Shabaab said that in fact it was a "portrayal of Islam".
http://www.telegraph.co.uk/news/uknews/terrorism-in-the-uk/10077426/Woolwich-attack-Somali-terrorists-warn-Britain-Your-chickens-are-coming-home-to-roost.html