But what of antifa?

What IS antifa? I don't know much about them, and I suspect you don't either, so maybe start with Wikipeda. Jezebel's Harron Walker has a good and quick take for you as well. See "Area Fascist Still Doesn't Know What Antifa Is." (Jezebel, May 31, 2020.)

Beyond that, a greater understanding of "what is antifa" is too much for me to tackle. Instead, I'm just taking a few notes here based on my concern around the president labeling antifa a terrorist group. I decided to do a bit of googling and reading around the news to try to answer one question for myself: Is "antifa" actually behind all the rioting and looting going on in the US these past days? If so, maybe some level of outrage is warranted. If not, it's fair to question what's actually going on here.

Black Lives Matter

Other people can explain this better than I can, so I'm going to quote and link quite a bit here.

Black Lives Matter. Doesn't "All Lives Matter" mean the same thing / mean a good thing, too?

No. German Lopez from VOX explains  Why you should stop saying “all lives matter,” explained in 9 different ways . (July 11, 2016.)

It’s a common conversation these days: One person says, “Black lives matter.” Then another responds, “No, all lives matter.”

It’s also a complete misunderstanding of what the phrase “black lives matter” means. The person on the receiving end interprets the phrase as “black lives matter more than any other lives.”

But the point of Black Lives Matter isn't to suggest that black lives should be or are more important than all other lives. Instead, it’s simply pointing out that black people's lives are relatively undervalued in the US — and more likely to be ended by police — and the country needs to recognize that inequity to bring an end to it.

My Coronavirus Notes & FAQ

Here I'm pulling together a few different bits of information on dealing with the COVID-19 pandemic that I believe to be correct. I've linked to sources and included publication dates to help with identification and trust.

Starting with: Should you wear a mask when out and about?

Yes. See this post from Daring Fireball's John Gruber. "We’re waiting for peer-reviewed studies. In the meantime, early studies and anecdotal evidence from countries with established mask-wearing social norms suggest quite strongly that mask wearing is effective." (May 21, 2020.)
See also "HAMSTER RESEARCH SHOWS MASKS EFFECTIVE IN PREVENTING COVID-19 TRANSMISSION" linked to and summarized by John Gruber. (May 21, 2020.)

John's not some conspiracy theorist. He's a respected tech blogger linking to various respectable sources of information.