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It's been only three weeks since terrorists stormed the Bataclan Theater in Paris and killed 89 people at a packed concert.

Last night, the band at that concert, Eagles of Death Metal, returned to play Patti Smith's "People Have the Power" with U2 at their show in Paris.

On Tuesday, the band also visited the Bataclan to pay tribute to the victims.

Eagles of Death Metal's name is still on the Bataclan marquee. Photo by Dominique Faget/AFP/Getty Images.

A few days after the attack at their concert, the Eagles of Death Metal posted an announcement to Facebook canceling all shows until further notice: "While the band is now home safe, we are horrified and still trying to come to terms with what happened in France."

Despite narrowly surviving and experiencing an "unimaginable ordeal," the band spoke of the people who had helped them, "proving once again that love overshadows evil."

And they're not letting some terrorists divide them.

The concert and the band's visit to the memorial are astounding, beautiful examples of the power of human resilience.

Eagles of Death Metal's Jesse Hughes and Dave Catching at the memorial for victims of the Bataclan concert hall attack. Photo by Miguel Medina/AFP/Getty Images.

If this concert appearance seemed like it was out of the blue, it was actually a couple weeks in the making.

According to the BBC, right after the attacks, U2 flew the EODM members back to the United States on their private jet and even bought them cellphones to replace the ones they had lost in the attack.

U2, who were scheduled to perform the day after the attacks, had also rescheduled their concert dates. But with EODM last night, they made it clear that the show must go on.

"They reminded us that the bad guys never take a day off, and therefore we rock 'n rollers cannot either," said EODM lead singer Jesse Hughes, as quoted by BBC.

"These are our brothers. Our fellow troubadours," said legendary U2 frontman Bono as he introduced the band. "They were robbed of their stage three weeks ago, and we would like to offer them ours tonight. Would you welcome the Eagles of Death Metal!"

Upon taking the stage, Hughes shared his gratitude with the crowd, saying, "We love you too, so much, for giving us this opportunity. I look around and what do I see, nos amis, our friends. I f---ing love you guys so hard, and I will never stop rocking and rolling."

Eagles of Death Metal's Jesse Hughes at the memorial for victims of the Bataclan concert hall attack. Photo by Miguel Medina/AFP/Getty Images.

After making a surprise appearance at a U2 concert, EODM drummer Julian Dorio and Matt McJunkins visit the memorial to the Bataclan concert hall victims in Paris. Photo by Miguel Median/AFP/Getty Images.

Photo by Miguel Medina/AFP/Getty Images.

The song that both bands chose to perform is about unity and peace:

"I believe everything we dream,
can come to pass through our union,
we can turn the world around,
we can turn the earth's revolution,
we have the power,
People have the power."

In a world where an Islamist terrorist organization carries out attacks to provoke others against the very people they claim to be fighting for, in a world where we have a presidential candidates calling Mexican immigrants criminals and for a ban on all Muslims entering the United States, it's important that we take this message of unity and brotherhood to heart.

We have the power to go on, with love and compassion.

Watch Eagle of Death Metal's appearance at the Paris U2 concert below: