> However, understand the context: the beggar entered a McDonald's and asked clients that were currently eating for money. He got offered the fries of a woman who didn't finish them.

Consider the beggar’s context too. How many times per day/week must they go into that McDonald’s? Leftover fries are probably what they get offered the most. You can accept it a few times, but after a while they provide neither pleasure nor sustenance.

> In my experience, people don't give cash to beggars anymore.

Anecdotally, seems about right.

> But I think many would be open to give food or donate useful objects instead (which they don't have at hand when being begged).

Again, I agree, but I don’t think anyone asks either. One possible workaround would be to donate to your local food bank or another organisation you trust, then when asked by a beggar direct them there. Though that could be another can of worms depending on where one lives.

I have on several occasions offered to pay for food at a nearby sandwich shop or fast food place for beggars who were asking for money for food. None of them accepted the offer.

I agree with your comments.

The person denied the fries without adding anything and left. This makes everyone who heard that the beggar didn't need food. Otherwise he'd have asked for something else (even food from the supermarket nearby).