Think or thought

1b00Muslims' sense of belonging could be eroded by European nations not tackling discrimination, a watchdog has warned.02b02br
00A report by a European Union-backed anti-racism body says the number of Islamophobic incidents in the 25 member states is probably under-reported. 02br
00The report calls on governments to speed up Muslim integration - but says Muslims must also do more to counter stereotypes and fears of extremism. 02br
00At least 13 million Muslims are thought to live in European states.02br
00In the report, the European Monitoring Centre on Racism and Islamophobia (EUMC) says it has documented a wide range of anti-Muslim or Islamophobic abuse across the EU's 25 member states.02br
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001.At least 13 million Muslims are thought to live in European states.02br
00I would rewrite the above as follows:02br
002.They think at least 13 million Muslims are living in European states.02br
00What makes the difference between my sentence and the original?02br
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