They signify different things to different cultures.

在不同的文化中有着不同的含义
Are any of them tied to anything dangerous, like cults?

这些符号与危险的东西有关的吗比如邪教
Hmm, a few, yes,

是有一些
but mostly, these are associated with the freemasons,

不过大部分都与共济会有关
which is why you see so many on buildings and icons in the U.S.

所以在美国的建筑和图标中才会这么常见
A lot of our founding fathers were freemasons.

我们的很多开国元勋都是共济会成员
Yes. I saw "National treasure."

我知道我看过《国家宝藏》
As did I, sadly.

我也是真遗憾
Some odious factual errors.

不少可恶的事实错误
Though it is true that during the american revolution,

不过在美国独立战争期间
symbols like these were used as markers

的确有些类似的符号
for war secrets and buried treasure.

被用作战争机密和掩埋宝藏的标记