Interestingly, in recent years charges of [[bad science]] and [[junk science]] in public policy debates has led to bogus '''false accusations of bad junk science''' becoming a propaganda technique in its own.
In this case, the [[propaganda]] technique may merely be an attempt to tack "bad science" as a negative [[buzzword]] onto whatever is being attacked. It may be effective because counter-arguments against these claims are long, complex and difficult to understand.