I will have some time between flights in Cairo. I would love to visit the city but with all recent events I don't know how safe it is to visit it. Specially because it would be around 20h (so night time).
Post is related to a rapidly changing event.
closed as primarily opinion-based by Flimzy, Gagravarr, VMAtm, Andrew Ferrier, Vince Oct 20 '14 at 1:51
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I believe most of my answer on this when it came up in 2012 is still relevant - safety is what you are willing to risk.
Impressively for a government website, the US State Department has a great quote on safety:
"There is nobody better at protecting you than yourself.". Be careful, keep informed, be safe."
Most countries have a travel advisory / security / safety website. the US State Department has this page for learning about your destination - enter in Egypt, and you can see what they have to say.
One thing, as mentioned in a Rick Steves podcast I was listening to recently, is that these sites have to err on the side of caution. If they didn't mention a danger and something happened, they'd get blamed for not warning you. As a result, they warn you about every possible risk. So take it in, but realise that a risky or dangerous place doesn't necessarily preclude you from visiting. Indeed, sometimes the crime/uprising/protests are taking place in jungles (Colombia), regions (Afghanistan) or other spots that you're not planning on visiting yourself. Research, read the information, and then ultimately, you have to decide how safe it is for yourself.
Some people will still go, others will decide against it. We can't decide for you.