How do the cartoon and graphs above indicate why the first and second estate, despite their power, would fear the third estate?

The third estate had the masses and could easily access tons of weapons and that caused the first and second estate to be fearful of them. When they stormed the bastille, the third estate had put themselves in a position to wage war against the other two hence the security of the first and second estate was threatened.

Well cause daddy stick three d’s slapping them on the tower of paris.