Is Goodrich The New Brown?

This cartoon seems kind of counterproductive. In it, a public school teacher begins a lesson on "modern marriage," at which point most of the class disappears because "Their parents placed them in other schools." Given the popularity of drawing parallels between the gay rights movement and the civil rights movement, it doesn't seem helpful to the cause of traditional marriage (which the cartoonist supports) to threaten that the reaction to changes in marriage will resemble the "white flight" that followed school integration.