The 2016 Standing Rock protest was only the most recent manifestation of the indigenous American values inherited by European settlers on this land.
Anti-immigrant policies ignore that American ideals like liberty, equality and the pursuit of happiness can be traced back to the indigenous pioneers who once moved freely across North America.
An impression of what it could have looked like: a giant lizard, Megalania, stalks a herd of migrating Diprotodon, while a pair of massive megafaunal kangaroos look on.
Studies of the fossil teeth of the three-tonne Diprotodon have revealed the now-extinct beast was Australia's only known seasonally migrating marsupial.
A brown bear snags a sockeye salmon in Alaska. In warm years, red elderberries ripen early and Kodiak bears leave streams full of salmon to eat them.
Climate change is making berries ripen early in Kodiak, Alaska, luring bears away from eating salmon. This shift may not hurt the bears, but could have far-reaching impacts on surrounding forests.
EU citizens gather in Westminster on September 13 to lobby for their post-Brexit rights.
Stefan Rousseau/PA Wire
Policies that are hard at the border but soft on the inside help migrants to integrate in a new country.
Women walk in the rain brought by Hurricane Irma in Cap-Haitien, Haiti.
REUTERS/Andres Martinez Casares
Data reveal how hurricanes affect migration, and what it means for US immigration policy.
Is Donald Trump hoping to trade dreams for bricks?
From south of the border, Trump seems to be using DACA as a diplomatic weapon in his ongoing power struggle with the Mexican government. That just hurts 800,000 people and helps President Peña Nieto.
Politics podcast: Nick Xenophon on media reform.
Nick Xenophon's position on contentious legislation – currently media reform – is crucial for the government.
A protest in Rome on August 26 after violent evictions from Piazza Indipendenza.
Police used water cannons and tear gas to remove a group of migrants and refugees from a square in Rome in August.
New data points to misplaced UK clampdown on 'overstaying' international students.
Saad Mohammad Al-Husainy, a student in Birmingham, marries Colette O'Neill in 1954.
Photograph courtesy of Sùna Al-Husainy
For some, the forced movement and brutalities of partition in 1947 led to new opportunities for women and migration to Britain.
There are 48,000 Polish people over 50 living in the UK.
Family care arrangments likely to come under pressure under new migration rules.
Refugee rights activists greet a boat arriving in Naples harbour in May 2017.
Refugians living in a loosely-connected set of self-governing units would be given a biometric card called a 'Sesame Pass'.
Cities and universities can overcome social divides and create better places, but only if they work together.
Fortress Europe: Macdeonian soldiers patrol the Greek border.
New research questions the scale of support for tougher border security across Europe.
Hang on, is that a spider floating this way?
The closest relative of Kangaroo Island's trapdoor spider lives in South Africa - and the arachnid could have arrived in Australia by oceanic migration.
George Dreyfus, centre, holding a bassoon and Walter Wurzburger, far left, holding a clarinet.
JC Williamson production 1949
In the late 1930s, Australia sought to restrict the flow of refugees, ruling that musicians were 'unsuitable' as migrants. Yet some talented Jewish musicians did arrive here and their work has enriched our cultural life.
Journey stops here: African migrants rescued by the Libyan coastguard.
The proposal ignores how bad the EU is at sharing responsibility for asylum seekers.
Excavating the eastern wall section of Halmyris in 2016.
Excavating the history of migration along the frontier of the Danube.
The Coast Guard Cutter Mohawk crew interdicts a group of Haitian migrants July 11, 2017, approximately 22 miles south of Great Inagua, Bahamas.
Coast Guard News/flickr
The mass movement of people across the world is nothing new, but migration today is so global and so unrelenting that it may well be the great humanitarian issue of our time.
A Syrian refugee and his two daughters wait for relocation in northern Greece.
With the EU's refugee relocation scheme due to end in September, progress has been painfully slow.