YABVU. What on earth are you talking about, " horrible savage dogs on the loose just looking like they're ready to maul a child"? And your justification for this nonsense is...?
Fact - ANY dog can bite, regardless of breed.
Fact - Like dogs, not all people deserve the reputation which goes with their look/style of dress or hair etc. Yes, some people do look "too scary to question" (my best pal being one such). Sometimes however they are perfectly approachable and good-natured (my best pal being like this too).
People may allow their kids near dogs because they are not as prejudiced and ill-informed as you appear to be.
Regards from one with children, who has owned dogs all those DCs lives and for many years prior to their births, who owns a (if you'll believe the hype) "suspect, dangerous" breed and has done so in the past, who has fostered/rescued all types of dogs in the home with her DC, including SBTs, EBTs, GSDs, a Dobe, Rotties to name a few and who has REAL LIFE experience of dogs and a very good knowledge of the suffering caused to dogs by ignorance and prejudice.