Is the republican party evil? how about the Democrats? What about the Jewish faith, or the Baptists, are they evil? Is Major League Baseball an evil institution, or the NBA?
It is easy to find people that could argue that any of the above organizations are "evil" for any number of reasons. It all depends on who you ask and what their personal motives and beliefs are.
Freemasonry is a fraternity, one in which members dedicate themselves to being better men by adhering to moral virtue and personal responsibility. One way of expressing this is through civic service and charity.
Pop-culture has told you that Masonry is "hidden", "shadowy" and so on. But you can find a Masonic Lodge, clearly marked in nearly every city, and there is no shortage of actual Freemasons who are willing to discuss and answer questions about Masonry.
Freemasonry is not satanic, nor is it religious in any way. As a matter of ensuring members have a moral compass, the rule was made that all Masons must be men of faith, but each Mason is free to worship the Lord by nearly whatever specific faith he chooses. Atheists, satanists, and tree and rock worshipers are specifically excluded from Masonic membership however.
Masonry is also not involved in any new world order conspiracy. Aside from the basic fact that Masonry respects individual rights and personal liberty and detests tyranny, it is not a political organization either. Members are left-wing, right-wing, middle of the road, and everything in-between, not exactly an efficient foundation for world domination having everyone with different social and political views now is it?
Masonic charities are the world's most generous, providing millions of dollars towards hospices, abused women and children shelters, homeless shelters, organ and blood banks, learning disability centers,and most notable, St. Jude's Children's hospitals and Shriner's Children's Hospitals. Most Masonic Lodges actually operate with year-end balances of zero dollars due to this generosity. Again, not an efficient formula for evil. Unless you believe the armies of world domination is to be made up of little bald-headed children in wheelchairs.
TV shows love to film the handful of old Masonic Lodges with the marble floors and ornate woodwork, giving the fraternity the air of opulence and wealth. Failing however though to show you the attic that is condemned due to termite damage, the leaking sewer line in the basement, the chairs with broken legs, or that the members never take their coats off because the heater broke down 9 years ago. They also neglect to show the other 99% of Lodges that are quite modest, or mention that the vast majority of Masons are working class people in your very community. Enough money passes through a typical Masonic Lodge to fix such things or upgrade the Lodge substantially. But that money goes instead to the community first.