With Europe’s next major election set to take place in Italy on Sunday, fears that false information could mislead voters have again surfaced.

Misinformation has thrived on social media, where it can be difficult to tell the difference between real and false quotes, images and articles.

And with internet companies and governments struggling to keep up with the waves of false reports, politicians have expressed concern about how the misinformation might skew the voting process and stoke tensions.

Here are examples of how false information has spread in Europe recently, polarizing opinions about contentious topics like Muslim immigration.