executivemonkey

The Niʻihau incident might have contributed to the decision to create the internment camps.

"The Niʻihau incident (or Battle of Niʻihau) occurred on December 7–13, 1941, when Imperial Japanese Navy Air Service pilot Shigenori Nishikaichi (西開地 重徳 Nishikaichi Shigenori) crash-landed his Zero on the Hawaiian island of Niʻihau after participating in the attack on Pearl Harbor....The island's Native Hawaiian residents were initially unaware of the attack, but apprehended Nishikaichi when the gravity of the situation became apparent. Nishikaichi then sought and received the assistance of the three locals of Japanese descent on the island in overcoming his captors, finding weapons, and taking several hostages....Novelist William Hallstead argues that the Niʻihau incident had an influence on decisions leading to the Japanese American internment. According to Hallstead, the behavior of Shintani and the Haradas were included in an official Navy report dated January 26, 1942. Its author, Navy Lieutenant C. B. Baldwin, wrote, 'The fact that the two Niʻihau Japanese who had previously shown no anti-American tendencies went to the aid of the pilot when Japanese domination of the island seemed possible, indicate[s] [the] likelihood that Japanese residents previously believed loyal to the United States may aid Japan if further Japanese attacks appear successful.'"

Just to be clear, I think it was wrong for the US gov't to create the camps. I am not attempting to justify the decision, but rather contributing something relevant that I know.

You are right about how the attack on Pearl Harbor was perceived by American society, though there is some evidence that the US government had intelligence that indicated the attack would occur.

However, the American people had reason to anticipate a war with Japan due to steadily rising tensions that began with Japan's invasion of China:

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Japan's 1937 attack on China was condemned by the U.S. and several members of the League of Nations including Britain, France, Australia and the Netherlands. Japanese atrocities during the conflict, such as the notorious Nanking Massacre that December, served to further complicate relations with the rest of the world. The U.S., Britain, France and the Netherlands each possessed colonies in East and Southeast Asia. Japan's new military power and willingness to use it threatened these Western economic and territorial interests in Asia.

Beginning in 1938, the U.S. adopted a succession of increasingly restrictive trade restrictions with Japan. This included terminating its 1911 commercial treaty with Japan in 1939, further tightened by the Export Control Act of 1940. These efforts failed to deter Japan from continuing its war in China, or from signing the Tripartite Pact in 1940 with Nazi Germany and Fascist Italy, officially forming the Axis Powers.

Japan would take advantage of Hitler's war in Europe to advance its own ambitions in the Far East. The Tripartite Pact guaranteed assistance if a signatory was attacked by any country not already involved in conflict with the signatory; this implicitly meant the U.S. By joining the pact, Japan gained geopolitical power and sent the unmistakable message that any U.S. military intervention risked war on both of her shores—with Germany and Italy on the Atlantic, and with Japan on the Pacific. The Roosevelt administration would not be dissuaded...it committed to help the British and Chinese through loans of money and materiel, and pledged sufficient continuing aid to ensure their survival. Thus, the United States slowly moved from being a neutral power to one preparing for war.[4]

On October 8, 1940, Admiral James O. Richardson, Commander in Chief, Pacific Fleet, provoked a confrontation with Roosevelt by repeating his earlier arguments to Chief of Naval Operations Admiral Harold R. Stark and Secretary of the Navy Frank Knox that Pearl Harbor was the wrong place for his ships. Roosevelt believed relocating the fleet to Hawaii would exert a "restraining influence" on Japan.

Richardson asked the President if the United States was going to war. Roosevelt's view was:

"At least as early as October 8, 1940, ...affairs had reached such a state that the United States would become involved in a war with Japan. ... 'that if the Japanese attacked Thailand, or the Kra Peninsula, or the Dutch East Indies we would not enter the war, that if they even attacked the Philippines he doubted whether we would enter the war, but that they (the Japanese) could not always avoid making mistakes and that as the war continued and that area of operations expanded sooner or later they would make a mistake and we would enter the war.' ... ".[5][6]

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Source is Wikipedia

That is true.

How do people get infected by ransomware? Is it possible to get it even if you don't click on links in unexpected emails or run .exe files from dodgy sites?