Fundamental Rights
(1) All citizens shall have the right - (a) to freedom of speech and expression; (b) to assemble peaceably and without arms; (c) to form associations or unions or co-operative societies; (d) to move freely throughout the territory of India; (e) to reside and settle in any part of the territory of India; (g) to practise any profession, or to carry on any occupation, trade or business. (2) Nothing in sub-clause (a) of clause (1) prevents the State from making reasonable restrictions on this right in the interests of the sovereignty and integrity of India, the security of the State, friendly relations with foreign States, public order, decency or morality, or in relation to contempt of court, defamation, or incitement to an offence. (3)-(6) Similarly permit reasonable restrictions, in the public interest, on the rights to assemble, form associations, move freely, reside anywhere, and practise a profession or business - including professional/technical qualification requirements and State-run trade or industry.
This is the core "freedom" article: every citizen can speak freely, gather peacefully, form associations or unions, travel and settle anywhere in India, and take up any lawful profession or business. None of these are absolute - the government can impose "reasonable restrictions" for specific, listed reasons like public order, India's security, decency, or preventing defamation - but it cannot restrict these freedoms beyond what is reasonable and for a listed purpose.
Sharing a genuine warning about a scam you experienced, criticising a public official's decision, or organising a peaceful protest are all protected under Article 19(1) - a threat that you'll be arrested simply for posting an honest, factual warning online is not a lawful restriction unless it falls into one of the specific listed exceptions (like defamation of a specific person with false claims).