Let’s take for example the set of people who worked for the “Internet Research Agency” outlined in the Mueller Report. Employees in Russia were paid to create “American” profiles with fake information and to post to US sites with specific goals in mind. Specifically “sowing discord in the U.S. by inflaming passions on a range of divisive issues”. This was the definition of propaganda in my mind. It’s not often that you have the US intelligence apparatus to investigate and outline all the ways that something is propaganda. Sometimes you just have to go with gut feeling based on circumstantial evidence. In the case of Ukraine, the lengths Russia is willing to go are even more clear since since the start of the war, but have been there for those paying attention for years.