Up to 16 thousand off-duty police officers are set to march in the capital against cuts to the force. They'll don black caps for every police officer lost under the Government's budget cuts.
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Rahman was ejected from his powerful job in April by an Election Commissioner after being accused of corrupt and illegal practices.
The service was due to start in September but there is no agreement on pay and conditions such as how many night shifts staff will work.
Would you know what to do if you needed help? Here's the official advice from the Foreign Office.