Crack wasn't even targeted in the War on Drug policies until the 80s. The drug was relatively unknown to the general public compared to the other drugs that were targeted. Even Newsweek reported in 1977 that cocaine was safer than cigarettes and liquor "when used discriminately"[1].
Yes, and the New York and Miami drug wars of the 1980s were consequences of the escalation of the law enforcement War on Drugs in the 1980s, including the targeting of cocaine in that war in the 1980s.
[1] http://www.crack-facts.org/historyofcrack.html