Manchester United fans have launched a "#BoycottAdidas" campaign on Twitter.
Some United supporters threatened not to wear Adidas products until the Glazers sell the club.
Adidas are the club's official kit manufacturers.
Fan group The 1958 revealed on Wednesday night that they would be targeting a different stakeholder each week.
They wrote on Twitter: "Calling all reds! Tonight we launch our worldwide cyber campaign against the Glazer stakeholders.
"Each week we'll be focusing on one Stakeholder at a time and posting two easy tasks every few days that week.
"This week we start with: Adidas.
"Do your bit, save your club."
The aim of the campaigns are to "reduce the effectiveness of the stakeholders' advertising budgets" and also create a negative perception of the brands.
It called for supporters to fill social media with negative comments and bad press in order to impact the company's revenue.
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