Yeah, they do kind of look like swastikas...

But it would be bigotry to generalize and say all shapes with radial symmetry and four sides are evil.

Swastikas and other similar designs are very common, especially with one Chinese group I think 'Hakka'?

The Nazi's use of it in propaganda really is a tiny part of its history.

He said "what the boxes are used to build", the original guy was talking about shapes you can make with the boxes. The replier was too: someone could stick a bunch of them together into a swastika.