Which legislation guaranteed minorities and woman access to employment in the field of law enforcement?

The answer is "The 1964 Civil Rights Act and it amendments."

The Civil Rights Act of 1964, which finished isolation out in the open places and prohibited business segregation based on race, shading, religion, sex or national birthplace, is viewed as one of the delegated administrative accomplishments of the social equality development. First proposed by President John F. Kennedy, it survived solid resistance from southern individuals from Congress and was then marked into law by Kennedy's successor, Lyndon B. Johnson. In consequent years, Congress extended the demonstration and passed extra social liberties enactment, for example, the Voting Rights Act of 1965.