Data mining firm has found between 20 and 50 social media accounts active in Baltimore on Monday were also used in Ferguson last summer . The company said it was able to identify the account holders by matching their names with those of people who had posted about protests or unrest at that time. One account tweeted photos of Gray 's funeral and used language anticipating Monday 's violent clashes . A 10 p.m.- 5 a.m. curfew has been imposed by the mayor of Baltimore .
Data mining firm has found between 20 and 50 social media accounts active in Baltimore on Monday were also used in Ferguson last summer . Link suggests the presence of 'professional protesters ' or anarchists who looking to take advantage of Freddie Gray 's death to incite more violence . One account tweeted photos of Gray 's funeral and used language anticipating Monday 's violent clashes . A 10 p.m.- 5 a.m. curfew has been imposed by the mayor of Baltimore .