http://en.wikipedia.org/wiki/Japs The explanation for "Jap" is here. Somebody Jewish is a Jew. Somebody Japanese is Japanese, not "Jap." Jew is proper usage to describe somebody of Jewish descent, Jap is not proper usage to describe somebody of Japanese descent. For a complete list of what you call people from various countries please see: http://www.geography-site.co.uk/pages/countries/demonyms.html
Most of the Filipinos the Americans slaughtered from 1898 on were not Muslim extremists, or Muslims at all. https://history.state.gov/milestones/1899-1913/war They were Roman Catholics. The Spanish conquered the Philippines in the 1500s and over the course of more than 300 years the population converted to Roman Catholicism. Today approximately 90% of Filipinos are Christians and 10% are Muslims. Mark Twain wrote eloquently about U.S. atrocities in the Philippines under General Leonard Wood, specifically the Moro Crater Massacre in which American soldiers slaughtered 600 Muslim Moro villagers (many women and children) http://en.wikipedia.org/wiki/Moro_Crater_massacre.
I’m not going to get into the whole nuclear bomb/Japan thing. Many prominent Americans opposed the decision then (Eisenhower among them), many studies done at the time concluded the bombs were not necessary to end the war (see http://en.wikipedia.org/wiki/United_States_Strategic_Bombing_Survey#Atomic_bombing and the conclusion "Based on a detailed investigation of all the facts, and supported by the testimony of the surviving Japanese leaders involved, it is the Survey’s opinion that certainly prior to 31 December 1945, and in all probability prior to 1 November 1945, Japan would have surrendered even if the atomic bombs had not been dropped, even if Russia had not entered the war, and even if no invasion had been planned or contemplated."), and there is voluminous scholarship on the issue, much of it very recent, supporting the idea that the bombs were unnecessary and immoral (http://www.counterpunch.org/2008/08/06/the-atomic-bombing-of-japan/; http://www.counterpunch.org/2011/08/05/the-decision-to-bomb-hiroshima/).
Furthermore, Gaza is one of if not the most densely populated places on planet Earth. There ain’t too many places where civilians are not present, most of them refugees or the descendants of refugees ethnically cleansed from what became southern Israel. The entire rhetoric of human shields and Hamas responsibility for civilian casualties is straight Israeli propaganda. Amnesty International recently issued a report describing deliberate Israeli attacks on medical professionals in Gaza which constitute war crimes http://www.amnesty.org/en/news/mounting-evidence-deliberate-attacks-gaza-health-workers-israeli-army-2014-08-07. No independent evidence exists that Hamas uses human shields in Gaza http://www.commondreams.org/news/2014/08/07/netanyahu-urges-us-lawmakers-defend-israel-against-icc-war-crimes-prosecution; Human Rights Watch has now do*****ented cases in which Israel fired on civilians fleeing the violence and stated that "deliberate attacks on civilians who are not participating in the fighting are war crimes." And Hamas didn’t start the war; Israel did. Israel blamed Hamas without evidence for the kidnapping and killing of 3 Israeli settler teenagers and a series of Israeli provocations finally resulted in Hamas firing glorified fireworks into Israel (called "rockets" in Western discourse to exaggerate the primitive Hamas projectiles). See http://normanfinkelstein.com/, particularly the 46 minute interview during which Finkelstein exhaustively analyzes and contextualizes the latest Israeli massacre in Gaza.
Finally, to the post in which the person claims I only focus on American atrocities I ask why wouldn’t an American citizen focus on American atrocities? As citizens of this country we are obligated to address our own crimes and to work democratically to build a better America in which the leaders we elect do not commit those sorts of crimes. This is something Chomsky has written about for decades. What is the moral content for an American to berate some other society for crimes and atrocities they commit? We should focus on ourselves and be good citizens of the world. That is our primary responsibility.