Susan Rosenberg sits on the Board of BLM. She was convicted for1983 bombing of US Capitol Building, the U.S. Naval War College and NY PBA. She was released after serving 16 of her 58-year sentence when Bill Clinton commuted it on his last day in office. https://www.snopes.com/fact-check/blm-terrorist-rosenberg/

BLM is a 501(c)(3) tax-exempt, left-wing, Marxist-leaning organization created by three woman. Alicia Garza, Patrisse Cullors and Opel Tomet.
Cullors compared Trump to Hitler, saying he “is literally the epitome of evil, all the evils of this country”

BLM is sponsored financially by the leftist group Thousand Currents, whose board of directors includes convicted terrorist, Susan Rosenberg, who was active in the May 19th Communist Organization, which FBI stated “openly advocates overthrow of U.S. Government through violence.”

On June 8 Managing director for the Black Lives Matter organization— Kailee Scales — conducted a disastrous Reddit AMA, during which she was hard pressed to disclose where and how exactly the money received from donations to BLM was being used.

She refused to answer those questions, and the ensuing controversy was enough for moderators to lock the thread.
However this galvanized internet sleuths into action.
One Reddit user pointed out Black Lives Matter uses ActBlue as their electronic platform for donations.

ActBlue is a nonprofit technology organization established in June 2004 that enables Democrats, progressive groups, and nonprofits to raise money on the Internet by providing them with online fundraising software.
Nothing suspicious about that, so far.

However, like pretty much everything else, the devil is in the details, literally.
Upon reading the fine print of ActBlue’s policy, many interesting details begin to emerge:

"In the event that a campaign or committee (a) fails for 60 days to cash a check from ActBlue which includes your contribution (after ActBlue makes repeated attempts to work with the campaign to ensure all checks are cashed), or

(b) affirmatively refuses a contribution earmarked through ActBlue, your contribution will be re-designated as a contribution to ActBlue."

"Contributions to social welfare organizations which are similarly not cashed or are affirmatively refused will be kept by ActBlue and used generally to support its social welfare activities"