Red Flags may or may not be opinions, for me usually...they are based on facts written on legal docs, filings that companies releases or PR's stating hyped up false info, misleading investors into their crap.
DISCLAIMER it's your decision to BUY/SELL/SHORT/HOLD/WATCH a stock, do your own DD, know your risk.
Facts as Proof via Official News/Filings/LOI/Pacer's/Links/Pics/Corp Profiles & other sources