Philadelphia's Islamic community is reacting to an early-morning attack on a group of worshipers outside a London mosque.

The attack comes weeks after a new report shows a sharp uptick in anti-Muslim incidents.

The Council for American-Islamic relations reported in May a 56 percent increase in the number of anti-Muslim incidents in 2016 over the previous year.

"We have to be very, very careful of the words we use," said Marwaun Kredie, who runs the Philadelphia Arab American Community Development Corporation.

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