This video tells you how to handle the situation where Police are interviewing you in a highly aggressive manner. It’s US, where over 1000 people a year are killed by cops. The same principles no doubt apply in many other places.
You might be lucky and get a cuddly cop like this one. Just be wary, is the advice in the video and be prepared.
Always be polite. Never engage. Ask ‘am I being detained?’
If not, leave.
Police are allowed to lie.
Never answer questions.
Do not physically resist under any circumstances.
As regards searches, just say ‘I do not agree to searches without a warrant’.
A dirty cop could find something that wasn’t there to begin with.
Police do not need to comply with the law, as decided by US Supreme Court.
If detained, don’t say anything. Just politely request an attorney.