Because they forgot to consider your opinion before dismantling a foreign policy of defense, diplomacy, and international coexistence into one of pre-emptive strikes, unilateralism, regime change, and nation-building.
Because Congress already shut its doors to you in October 2002 when it authorized the President to use force against Iraq without having to formally declare war.
Because the U.S. District Court sided with the President in February 2003 in a federal lawsuit that tried to challenge the constitutionality of a backdoor war.
Because all of the above amounts to oppression of your speech.