Bloomberg via Getty Images Bottles of lager move through the assembly line at the Yuengling brewery in Pottsville, Pennsylvania.

Beer drinkers on Twitter have been expressing their disgust at America’s oldest brewery after the owner of Yuengling publicly endorsed Republican presidential nominee Donald Trump on Monday. Some even pledged to boycott the company.

Richard “Dick” Yuengling Jr., the fifth-generation owner of the family business, welcomed Eric Trump to the Pottsville, Pennsylvania, brewery for a tour during a campaign stop on Monday, the Reading Eagle newspaper reports.

“My father’s going to make it a lot easier for business to function. We’re going to do it right here in the U.S.,” Trump’s second-oldest son said in a brief news conference.

In response, Yuengling voiced his — and his brewery’s ― support for the GOP nominee, saying, “Our guys are behind your father. We need him in there.”

Since then, many people have tweeted about their disdain for the endorsement:

a depressing day for pennsylvanians everywhere in the world.https://t.co/17rMzaHu6i — brandon wenerd (@brandonwenerd) October 26, 2016

Dude this @Yuengling_Beer thing has completely destroyed me. Please god let Wawa stay apolitical. — 💀 Stef 👻 (@crickwooder) October 26, 2016

@shgeldz Ohhhh noooooo! That sucks! 😫 And I was so proud of my home state's beer. You suck, @Yuengling_Beer !!!! — Karen Niemla (@niemla) October 26, 2016

Some went so far as to say they would outright boycott the company:

@EricTrump I will never drink another goddamn ounce of @Yuengling_Beer as long as I live. Many others I know will do the same. — TrumpCrafts (@TrumpCrafts) October 24, 2016

I just found out the owner of @Yuengling_Beer is a Trump supporter and I'm devastated I have to throw out the 6 pack in my fridge now. — Scott GHOULdzahler (@shgeldz) October 26, 2016

Yuengling endorsing Trump pisses me off. It's 1 of my favorite beers, but "people before profits" I say, so until they change, they lost me. — NUFF$AID (@nuffsaidNY) October 26, 2016

.@Yuengling_Beer I was a lifelong Yuengling drinker I mean LIFE. LONG. Will never touch it again, consider it poison https://t.co/1AloxdsncV — Daniel Esposito (@dje432) October 26, 2016

Not a big boycott guy, but why should i give Dick Yuengling even $1 to support Trump or his union-busting? https://t.co/XEJIP25he5 — Will Bunch (@Will_Bunch) October 26, 2016

I will never buy Black & Tan again. Nice work, @Yuengling_Beer. https://t.co/5BffEycMDT — Scott Weinberg (@scottEweinberg) October 26, 2016

I was until you pushed me too far. Never Trump. Dump Yuengling https://t.co/qmwMlbUKH6 — Davon Magwood (@davonmagwood) October 26, 2016

This isn’t the first time beer fans have considered forgoing Yuengling, a brand known as a decent, affordable brew. In 2007, union leaders claimed Yuengling threatened to close the brewery unless workers decertified the union. The brewery owner said workers voted to get rid of the union on their own accord. In 2013, Yuengling sparked another boycott when he called for Pennsylvania to pass “right to work” legislation, which would make it more difficult for unions to organize.

Editor’s note: Donald Trump regularly incites political violence and is a serial liar, rampant xenophobe, racist,misogynist and birther who has repeatedly pledged to ban all Muslims — 1.6 billion members of an entire religion — from entering the U.S.