The Donald Trump Inauguration Welcome Concert is on tonight, and there are fireworks, music, and thousands upon thousands of people on the Mall in Washington, D.C. to celebrate, to participate, or even to protest. Here are a few scenes from the happening.

https://twitter.com/wwrondo/status/822223571623772160

https://twitter.com/PiercedSkull/status/822224708863193088

We see you #TrumpTrain!!!!!#MakeAmericaGreatAgain #Inauguration2017 pic.twitter.com/VCEYOQ7cvq

— Dan Scavino (@DanScavino) January 19, 2017

https://twitter.com/SalenaZito/status/822196943078170625

https://twitter.com/SalenaZito/status/822205770120986625

WATCH the fireworks display at the #inauguration kickoff for President-elect @realDonaldTrump. #Trump45 pic.twitter.com/8iUB4QuFYd

— FOX Business (@FoxBusiness) January 19, 2017

https://twitter.com/DarHuddleston/status/822223440845438976

The #TrumpInauguralConcert ends with a bang at Lincoln Memorial
Trump closes by saying he'll protect US jobs and strengthen borders pic.twitter.com/BRP6mP6ftn

— Duncan McKenzie-McHarg (@duncanmcmc) January 19, 2017

People have been arriving all day, of course.

https://twitter.com/KGBVeteran/status/822166370934751232

WATCH: President-elect #DonaldTrump, #MelaniaTrump and family arrive in Washington, D.C. ahead of the #inauguration. #Trump45 pic.twitter.com/97rEfLythy

— Fox News (@FoxNews) January 19, 2017

Thank you to the brave men & women of @SATXPolice for traveling up to DC to assist with #Inauguration security. #TexasProud pic.twitter.com/qReNdSy8kO

— Senator Ted Cruz (@SenTedCruz) January 19, 2017