Why does the term "propaganda" carry a negative connotation

The word “propaganda” has a negative connotation – that is, people tend to use it for practices that they disagree with. It’s typically used to describe things like Communist propaganda or Fascist propaganda. These phrases imply that there’s something dishonest and sinister about propaganda.

Explanation:

THAT was copied and pasted from g0ogle so please re-word it

worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)