These are the circumstances under which the protest of the students in Tinker v. Des Moines would be deemed unprotected speech:
if their action had clearly threatened order and safety.
And since it didn't, there was no reason for it to be deemed unprotected speech.
In order to avoid problems with the Native Americans, the federal governments decided to gradually assimilate the native population into the American society.
There were multiple actions taken to accomplish the assimilation.
The Native Americans were granted all the rights as the other people, which enabled them to constantly communicate with everyone else, to get familiar with the culture, and get exposed to the culture, eventually accepting it.
Also, all the Native American children were obliged to visit school and get educated. The education was on English language, and the children were mixing from early age with children of the other ethnic groups, thus becoming Americanized from very early age.
They were allowed and motivated to work in the places were everyone else was working, which led to further assimilation, as the majority of the people were not Native Americans, so in order to fit in they had to merge into their culture.
<span>The selling of weapons to
Iran in the Ira-Contra affair was considered controversial because the senior
administration officials of the Reagan Administration were secretly
facilitating the sale of arms to Iran, which was the subject of an arms embargo
during that time.</span>
So your question seems to be talking about the outbreak of a war, or within a war, why certain areas become the places where battles are fought. Some of the possible reasons why that occurs where it occurs:
<u>Battle areas within a war</u>:
... One side in a war sees a weak spot in the other side's defenses and chooses to attack at that perceived point of weakness.
... A particular area is an important, advantageous location to hold for military purposes, so a battle will be fought to gain control of that strategic location.
... Sometimes battles occur at certain locations because they are key population centers and the battle is intended to demoralize the opponent's civilian population. Sherman's March in Georgia (in US Civil War), the Germans bombardment of London in the Battle of Britain (World War II) or the atomic bombings of Hiroshima and Nagasaki by the US (World War II) would be examples of this.
<u>Outbreak of a war</u>:
... A territorial dispute over an area of land leads to fighting between the two nations or groups that seek to control that territory.
... A government is ruling in ways which cause strife and opposition among its people, and a rebellion or revolution breaks out against the government.
... Rivalry and egotism between leaders of different countries leads to one king or ruler leading his country to war against the other king or ruler. (Sometimes wars have happened for personal reasons by powerful men in charge of armies.)
