Short answer. Yes. Article 142 of the Revised Penal Code, as amended by Republic Act No. 10951, expressly punishes any person who knowingly conceals such evil practices. Concealment of seditious conduct carries the same penalty as actively inciting to sedition under the same article.
What the law says
who shall knowingly conceal such evil practices.
Revised Penal Code, Article 142 — Inciting To Sedition. Read the full provision →
What inciting to sedition covers
Article 142 of the Revised Penal Code punishes persons who incite others to sedition without taking any direct part in it. The acts covered are wide-ranging: inciting through speeches, proclamations, writings, emblems, cartoons, banners, or other representations; uttering seditious words; writing, publishing, or circulating scurrilous libels against the Government or its duly constituted authorities; tending to disturb or obstruct any lawful officer in executing official functions; instigating others to meet for unlawful purposes; suggesting rebellious conspiracies or riots; or leading people against lawful authorities. All of these are forms of inciting without direct participation in sedition itself.
Concealment as a form of the offense
Article 142 goes further and includes at the end of its list: "who shall knowingly conceal such evil practices." Concealment is treated as equivalent to active incitement. A person who is aware that seditious practices are being organized or carried out, and who takes steps to hide that fact from authorities or the public, commits the offense even without uttering a word or producing any material. The key element is knowledge — the concealment must be knowing, not accidental or negligent. Passive ignorance of what is happening does not constitute concealment.
The current penalty under the 2017 amendment
Article 142 was amended by Republic Act No. 10951 in 2017, which updated the penalty amounts throughout the Revised Penal Code. The current penalty is prisión correccional in its maximum period and a fine not exceeding four hundred thousand pesos. This replaces the original 1930 penalty amounts, which were far lower. Older printed versions of the Revised Penal Code still show the pre-amendment figures. Always verify that the version you are consulting reflects the RA 10951 amendment.
Why concealment is treated as seriously as incitement
The inclusion of concealment alongside incitement reflects the law's view that anyone who actively shields seditious activity from detection enables that activity to continue and grow. An inciter creates seditious momentum; a concealer protects it from being stopped. The damage to public order from concealment can be as serious as the damage from direct incitement, particularly in the early stages of an organized seditious movement where exposure would prevent escalation. The statute accordingly treats knowing concealment as a form of participation in the crime of inciting to sedition, not merely as an unrelated act.