It’s not a good idea to spray paint or to create dust in a small, enclosed space; the concentration of fumes and particles is hazardous.
Outside, however, those same fumes and particles disperse quickly.
The ideas that we put into the world operate in a slightly different way.
Dispersion of a message is good, but concentration is better. Reaching a receptive audience in an impactful way ... that kind of concentration isn’t hazardous; it’s the goal, and it’s what makes change happen.