McDonalds got bad press because their advertisements were always aimed at children. They never encouraged children to eat healthy or exercise. The adverts got banned and now their adverts are with fruit bags or chidlren being active.
There was also bad press when McDonalds claimed their fries were vegetarian friendly but it was later found out that there were beef extracts in them. This obviously angered a lot of vegetarians.
The next thing McDonalds got bad press for was for killing animals unethically and in a cruel way. They now kill them 'correctly'
Hope this helps.
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