Clowns used to be beloved people in the past which kids have been very fine with. They were in birthday parties, shows, and just found in any situation. They were socially acceptable, which contrasts their treatment now.
Historical Notes
1980s - Clowns were used as branding for horror
1990s - Clown jobs have rapidly started to drop
2005 - Hurricane Katrina hit the city with the largest Clown population.
2008 - Most people affected by the housing crisis were once professional clowns.