disturbance; obstruction; hindrance; jamming; interference
interference with a public servant in the execution of his or her duties
obstruction of business; interference with business
interference; obstruction; sabotage
obstruction of business; interference with business; interference with somebody's duties
electromagnetic interference; EMI
disturbance of sleep; nuisance in the middle of the night
interference (esp. in horse racing)
forcible obstruction of business; obstructing business by force
interference with a public servant in the execution of his or her duties
(crime of) obstruction; obstruction charge
obstructing the discharge of official duties; hindering a government official in the execution of his duties
obstruction of proceedings; filibuster
jammer (e.g. radio signals); interceptor (aircraft)
falsely-provoked arrest for obstruction; police pretending to be knocked down so as to have grounds for an arrest
obstructive tactics; harassing tactics