(You’re going to have to use your brains on this one. I’ll even give you the link now to http://www.wikipedia.org so you can do some fact-checking.)
Republicans, by definition, are American political party members. The Republican party has been around in various incarnations since 1854 as a coalition of Northern Democrats, Whigs and Anti-slavery Free-Soilers. Abraham Lincoln was the first big Republican President, who did a few nice things, like the Emancipation Proclamation and a couple of ugly things, the US Civil War, as an example.
Essentially, the Republican Party has been in favour of business and free trade with a dash of keeping the government the hell out of the way. Some of this attitude led to Herbert Hoover being tossed out of office by Franklin D. Roosevelt and the New Deal during the Depression. The America-First wing of the Republican party would have kept the US out of WWII, even if Britain fell, as Europe wasn’t on their maps.
Post-war? There was Eisenhower and Nixon in the 50’s, where Ike pushed the containment of Communism with a side order of Internationalism, while Tricky Dick ran the national agenda. The Interstate Highway system is a result of the Ike and Dick show. The admission of Hawaii and Alaska as states is also an Eisenhower-era accomplishment. Ike coined the term "military-industrial complex" in reference to the mammoth business interests cloaked in secrecy who wanted more, bigger and more violent wars that they would supply the guns for. I would be remiss if I didn’t mention the 1957 era segregation riots. Ike called out the troops to insist that the Little Rock Central High School become integrated.
Then there was Richard Nixon. The phrase "Lying Sack of Shit Who Would Do Anything To Stay In Power" comes to mind, but I’ve promised myself not to say such things about Henry Kissinger anymore. Nixon was a vile, vicious punk and cheap-jack hustler who got elected to the highest office in the US. Twice.
The next Republican of note was Ronald Regan: A walking logo for America. More correctly the walking logo for a Hoover-esque America where assistance from the government was cut through the bone. Remember PATCO? In one day Regan fired all the air traffic controllers in the US because they had the temerity to belong to a union and ask for a raise? Remember airline deregulation? Remember Iran-Contra? Remember the economic meltdown of the late 70’s? Remember the Gordon Gecko-Greed-Is-Good-Bonfire-Of-The-Vanities mentality of the 80’s? Trickle-down Economics? James Watt as Secretary of the Interior? Alexander Haig? Ed Meese? James Baker? If those names seem familiar, go look at the meatsacks that were also in Daddy Bush’s Cabinet and inner circle.
After that, you got George Bush I who melted down in one term with Gulf War I, then Slick Willie who was roped and saddled by bottom feeders like Newt Gingrich and the Contract with America. Say what you will about Clinton, but at least he was getting some from a female who could consent and had reached the age of majority.
Then there is President Jo Jo The Idiot Boy.
Where Jo Jo The Idiot Boy went off the rails was in the selection of the swine he surrounded himself with. Doug Feith, Paul Wolfowitz, Karl Rove, Shotgun Dick Cheney, Donnie Rumsfeld, Irving Scooter Libby, John Bolton, John Ashcroft, Richard Perle and Alberto Gonzalez. Ideologues all, who wanted to fight someone, anyone, anywhere, but preferably someone big enough that the war could be a long-term earning proposition. Unlike Dutch Regan who only attacked Grenada and that was over in an afternoon.
The greed and power fueled rapacity of that group of Regan and Nixon era remainder bin cutouts makes one almost long for a return to Jimmy Carter. At least you knew Carter screwed up with good intentions, if nothing else.
Democrats, if the truth be known were not a lot better. FDR did what needed to be done to end the Depression, but you could tell his heart wasn’t in it. LBJ was handed a wounded nation and gave up when he found that he couldn’t win in Viet Nam. Carter meant well. Clinton meant well, but only talked a good game.
JFK was caught between a military-industrial complex that wanted to nuke Cuba and a CIA that was styling reality as vigorously as they do now. Had JFK not had his migraine headaches cured on November 22, 1963, things might have turned out differently, but we’ll never know.
Viewed in the totality, no, Republicans are not Evil. Republicans are sensible when it comes to Taxes (Less is Good) and Government (Less is Good). When it comes to Social issues, they suck about the same as the Democrats.
Internationally, the Republicans are so inept as to be funny, if they weren’t so damn dangerous to global peace. Which is the real issue: Have the Republicans made the US a pariah on the international stage? Emphatically, regrettably, yes.