As Mayor Bloomberg sought to dazzle the International Olympic Committee’s evaluation commission yesterday with a series of presentations on New York’s planned Olympic venues, lawmakers and local residents sought to portray the city’s vision as a Potemkin village hiding muzzled discontent.

From the steps of City Hall to a Columbia University lecture hall, the voices of opposition made themselves heard in short bursts throughout the day. Some charged Mr. Bloomberg with stifling public opposition to the games and its attendant West Side stadium through tactics better suited to the boardroom. Others accused the mayor of equating opposition to the Olympics with opposition to America.

A common thread from opponents of the bid: The delegates are being fooled.

“I think the mayor is very dictatorial about ‘This is good for New York and anyone who disagrees doesn’t have New York’s interest at heart,'” said Deborah Glick, a Democratic assemblywoman who represents parts of Greenwich Village. “I think he is using these tactics to eliminate any discussion, deflect any criticism, and to send a message that there should be and can be no debate.”

In an attempt get her own message out, Ms. Glick issued a press release to reporters yesterday saying Mr. Bloomberg has “stolen a page from the Bush playbook” by purportedly framing opposition to the Olympics as anti-American. Ms. Glick did not cite specific examples, saying in a phone interview that the accusation referred more to Mr. Bloomberg’s style than his public comments.

Connecting Mr. Bloomberg with Mr. Bush takes on special significance in a city where only one-fourth of the voters pulled the lever for Mr. Bush last year.

Another Democratic officeholder, Rep. Anthony Weiner, tried a similar counteroffensive at Morningside Heights.

“Mike Bloomberg shows a contempt for the processes of open government if they threaten to derail his pet projects,” Mr. Weiner, a Brooklyn-Queens congressman who is seeking the mayoral nomination, told a group of Columbia University students. “In that way he is as much a Republican as Tom DeLay and George Bush.”

Another Democratic candidate for mayor, Gifford Miller, criticized Mr. Bloomberg for his repeated assertions that the West Side stadium is an essential ingredient to a successful Olympic bid. The speaker of the City Council proposed two sites in Queens, one at Willets Point and another at Sunnyside Yards, as equally viable options for a stadium.

Mr. Miller also adopted the language of the mayor’s other Democratic critics by taking a jab at Mr. Bloomberg’s failed plan to keep competitors for the West Side air rights from bidding. The New York Jets were thought to have had the deal locked up until recent offers by the owners of Madison Square Garden and, more recently, TransGas. Mr. Miller expressed “concern” that the Bloomberg administration “has not made clear its real commitment to a competitive process.”

Politicians were not the only ones making noise yesterday. A group of Internet pranksters operating under the domain name 2012landgrab.net sent images to reporters of ironic posters on city buses, bus stop shelters, and subway walls. The images, apparently doctored with computer software, carried mock slogans such as “Democracy will come in last” and “Every billionaire gets home field advantage.”

An adjunct professor of art at Carnegie Mellon University, Nathan Martin, said the images looked like fakes. “It’s pretty easy to do this with Photoshop,” he said.

Mr. Martin, a self-described “Hactivist” who last year got into trouble for orchestrating a similar spoof involving printable Wal-Mart labels, said he did not know who was behind the anti-Olympic posters. The group’s domain name was registered to an Arizona company that is frequently used as a front for actual site owners.

Mr. Bloomberg’s office dismissed Ms. Glick’s charge that the mayor has strong-armed city residents into a forced Olympic fantasy.

“It’s unfortunate that the assemblywoman has joined ranks with the naysayers like the ones who opposed the creation of Central Park, which attracts tens of millions of visitors each year, and the redevelopment of Times Square, which became one of the world’s greatest economic development success stories,” a spokeswoman, Jennifer Falk, said.

Some residents also voiced opposition to the Olympic bid.

An actress who lives in Greenwich Village, Amy Stoller, said she is concerned about the city’s safety in the event New York is chosen for the Olympics and about the disruptions to daily life in the years that would precede it.

“I really feel I am being held up for ransom for something I really don’t want or need,” Ms. Stoller, a lifelong resident of Manhattan, said. “I don’t see how it would enhance my life and I can think of numerous ways in which it won’t.”

The 13 members of the Olympic committee’s evaluation commission are to prepare reports on London, Paris, Moscow, New York, and Madrid before the International Olympic Committee selects the host city in July.