When it comes to posting pictures on the internet, data privacy is a big concern. Many people usually don't like seeing themselves on the internet. The photographer of these images has opted for a humorous form of censorship.
In many countries, it is not prohibited to post pictures where the background is recognizable. However, in a few countries, strict data privacy policies apply. In countries like Canada and Singapore, such pictures could lead to a violation if charged. Conversely, in other strict countries like Germany, Austria, and Switzerland, which also have very strict data privacy rules, it's a gray area. On one hand, you should obtain the consent of the people you photograph, but on the other hand, if you take a picture in a city, and there are 8927 other people in the image, it's practically impossible to ask them all for permission. So, in such a country, it's not necessarily illegal to post such pictures.
In the end, the right approach is always to obscure the faces. Nowadays, there are numerous programs that make this process very simple. It's all about showing respect for other people. The photographer of these images has chosen a rather amusing form of censorship. Instead of simply pixelating the heads, they took a bold step and removed the heads entirely.
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