<Tr> <Th> "AmeriKKKa's Most Wanted" </Th> <Td> Ice Cube </Td> <Td> June 9, 1990 </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Th> "The Power" </Th> <Td> Snap! </Td> <Td> June 30, 1990 </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Th> "We're All in the Same Gang" </Th> <Td> The West Coast Rap All - Stars </Td> <Td> July 21, 1990 </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Th> "Untouchable" </Th> <Td> Above the Law </Td> <Td> August 18, 1990 </Td> <Td> </Td> <Td> </Td> </Tr>

Who had the first number one rap single