There are nuances of 911 where the US national air defence was stood down while terrorists with box cutters where able to fly airliners into the twin towers ( allegedly). An article from sage journal quotes the following:-

The prominent conspiracy theorist, David Icke, contends that problem–reaction–solution (PRS), known also as order out of chaos, is a device used by the powerful, social ruling elite to manipulate and shape public opinion with the intention of gaining approval for the implementation of societal controls (Icke, 2003, 2005, 2007, 2010) He posits that PRS involves three discrete, but interrelated phases (Icke, 2010). Initially, dominant individuals, groups, and/or organizations covertly engineer or exploit a problem to legitimize the enactment of laws, rules, and restrictions. Then, via an unquestioning media, the issue is broadcast, amplified, and popularized. Bringing the problem to the forefront of public attention arouses a strong social demand for action (reaction), which advances acceptance of a “predetermined” solution (Icke, 2005, 2010). According to Icke, PRS via this process insti- gates social change, legitimizes centralized power, and increases hegemonic authority (Icke, 2003, 2005, 2007, 2010). Concomitant with Icke’s theorizing, many conspiracy theorists view PRS as a propaganda technique and a power- ful form of mind manipulation (Chomsky, 2002; Robertson, 2016).

The divide and conquer principle also comes to view. Passions are high and its easy to see how people could start projecting on each other, fracturing communities. I'm seeing at the outset that the temptation is to follow the news to see what happens next. In my case, having reviewed a fair bit of news, I found difficulty in sleeping as negative images played out in my mind. I certainly see the danger in being dragged in.