US president also insists, contrary to evidence, that an increase in mail-in ballots would lead to widespread voter fraud.
Leah Harding is a presenter on Al Jazeera English. Leah speaks Arabic and reports on global politics.
Demonstrations started in response to the killing of George Floyd in Minneapolis, but anger has also been growing over President Donald Trump’s decision to send federal agents to the city.
The US Justice Department said on Thursday it would investigate the use of force by federal agents against protesters in Portland.
It conducted air raids after rejecting calls for a ceasefire during the holy month of Ramadan.
Hubble has captured the most distant stars and galaxies as well as the planets in our solar system.
To celebrate more than 20 years of research and study, the US agency has launched a competition.
Many people are sharing their experience of dealing with being in lockdown.
Schools, prisons and airports were also damaged.
Hundreds of thousands of people have fled their homes, and are now trapped between the violence and a closed border.
Haitian police exchanged fire with soldiers during a protest in the capital.