Long story short, Congress passed the Equal Rights Amendment in 1972. However, not all states have ratified the legislation. Ratification is needed to include the Amendment in the Constitution. The reason why a handful of states have not ratified the ERA is because they believe the amendment is too permissive in that it could create a society of "abortion on demand." So, in essence, activists are still trying to get the Amendment ratified by every state. Personally, I would never protest for "abortion on demand."
Also, while American women generally have equal rights, in many cases they still do not receive equal pay, particularly in middle America.