Why were mice let go at McDonald's?

According the recent TikTok video circulated into social media, an unidentified man left mice into famous fast food restaurant outlet McDonald's.

This rare event happened in the city of Star, Birmingham, U.K when a man disembarked from his car, picked up carton replete with rodents, walked inside an McDonald's, and threw dozens of mice painted with Palestinian flag. 

On seeing this, everybody got stunned and irritated by this unpleasant move. The motive behind this to record his protest against McDonald's for distributing free food to the soldiers of Israel. As we all know that the fighting is going on between Hamas and Israeli forces. 

Citing this unfortunate incident by Palestinian supporter, security beefed up around McDonald's. I have seen this video on YouTube channel 'The Telegraph' so decided to share this environment news. The video is available on YouTube by the title of 'Pro-Palestine activist releases box of rodents into a McDonald's in Birmingham', if haven't seen yet than must watch.